FR2831587A1 - WINDOW REGULATOR AND CORRESPONDING DOOR - Google Patents

Abstract

The invention provides a window regulator (1), comprising a guide rail (2), a slider (4) having a receiving part (6) of a window and sliding relative to the rail along a guide stroke of the rail, pivoting about an axis (X) perpendicular to the stroke and placed in a plane parallel to the mean plane of a window attached to the receiving part. The subject of the invention is also a door (17) incorporating a window regulator of this type. The invention makes it possible in particular to reduce the driving friction of the window.

Description

with a locking lever (17) of the deadbolt (2).

  WINDOW REGULATOR AND CORRESPONDING DOOR

  The invention relates to automotive cable windows, and in particular the window regulators. Document FR-A-2 728 008 describes a window lifter having two parallel rails guiding two sliders in translation in the direction of movement of the window. At each end of the rail, a respective cable return is fixed. A slider is attached to the front of the glass. This cursor consists of two parts which slide relative to each other in the direction of movement of the glass. The sliding between the two parts of the cursor allows the glass to pivot about an axis normal to the glass. Each cursor is guided by surface contact with a corresponding rail. The guiding of the window with respect to the rails and with respect to a window frame is thus hyperstatic. The friction to overcome to move the glass is thus important. At the end of the race, each cursor vertically exceeds the level of a reference. At the end of the stroke, the orientation of the cable between the nearest gear and the slider forms a large angle relative to the direction of movement of the window. The training effort of the cursor is thus increased. The support of a cable return pulley can thus be deformed. In addition, the wear of the cable and the power of the motor drive motor are thus increased. The placement of the glass in relation to the upper seals of a glass frame is

also uncertain.

  There is therefore a need for a connecting element between a window and a cable

  or a window regulator which solves one or more of the disadvantages mentioned.

  The subject of the invention is therefore a window lifter, comprising a guide rail, a slider having a part for receiving a window and sliding relative to the rail following a guide travel of the rail, pivoting about a perpendicular axis. running and placed in a plane parallel to the mean plane of a window attached to the

party reception.

  According to a variant, the cursor has an angular pivoting stroke

  in the rail included greater than 2.8 degrees.

  According to another variant, the cursor has an area of contact with the rail.

  less than 16 mm in length in one direction of travel.

  According to another variant, the window regulator also has a cable return arranged in the path of the slider, a cable passing through the cable return, a cable fixing part provided in the cursor, a recess provided in the cursor.

  shaped to allow the sliding of the reference.

  \\ HIRSCH4 \ VOLI \ DACTYLO \ t8900 \ 18923FRdoc-25/10 / 01- 11: 10- 1/8 We can also provide a window regulator which also includes another cable return arranged in the path of the cursor, a cable passing through the other cable return, a recess in the shaped cursor to allow sliding

from the other reference.

  Alternatively, the window receiving portion extends in the direction of

  the race beyond the reference when the cursor is at the end of the race.

  According to yet another variant, the cable extends substantially in the direction of the

  cursor travel between the gear and the fixing part.

  According to yet another variant, the rail has a groove and the cursor

  has a stud inserted in the groove.

  According to yet another variant, the window regulator has a play along its axis

  longitudinal between the stud and the bottom of the groove, greater than 3.5 mm.

  The invention also has for its object and a door comprising a window lifter as described, further comprising a window fixed on the window receiving part, a window frame blocking the pivoting of the window around the pivot axis of the cursor. .

  According to a variant, the guide rail is formed by a window frame.

  Other characteristics and advantages of the invention will appear on reading

  the following description of embodiments of the invention, given by way of example

  and with reference to the accompanying drawings which show: - Figure 1, a perspective view of elements of a window regulator according to the invention, in the absence of glass; - Figure 2, a top view in cross section of the elements of Figure 1; - Figure 3, a front view in cross section of the elements of Figure 1;

  - Figure 4, a window regulator according to a variant of the invention.

  The invention provides a window regulator with resistance to movement

  scaled down. Figures I to 3 show parts of a window regulator 1 according to the invention.

  This window regulator typically comprises two guide rails 2. These guide rails 2 can be mounted on either side longitudinally of a door. These rails extend substantially vertically in a desired direction of glass movement. Each rail 2 has a groove 3, serving as a cursor guide. A slider stud 5 4 is for example inserted in the groove 3 of a rail 2. The rail 2 and the slider 4 are thus shaped to allow relative sliding along the guide travel of the rail. The rail 2 and the slider 4 are also shaped to allow pivoting about an axis perpendicular to the stroke and in a mean plane parallel to the mean plane of an added glass and fixed to a receiving part, and passing through the middle cursor. This axis will be called the X axis in the

  rest of description. This X axis is substantially parallel to the longitudinal axis of the

  \\ HI RSCH4 \ VOLI \ DACTYLO \ 1 8900 \ 1 8923EN.doc- 25/1 0/0 1 - 11: 1 0 - 2/8 vehicle when the door is closed. This pivoting between rail 2 and slider 3

  reduces the hyperstatism of the glass guide compared to a door.

  In fact, according to the invention, the guiding of the window pane in a door frame hardly involves any deformation force in the guiding between the slider and the rail. The friction between the slider 4 and the rail 2 is thus reduced. This then makes it possible to reduce the drive force of the window, and if necessary to use a less powerful electric drive motor. The more the glass is curved or the more the stroke is curved around the pivot axis, the more this characteristic of

  pivoting around the X axis reduces the relative friction between the slider and the rail.

  One can for example provide that the cursor has an angular pivoting stroke greater than 2.8 degrees. An angular travel of 4.3 degrees is particularly suitable for reducing friction. around the X axis when the glass

is assembled to the cursor.

  In the embodiment shown in FIGS. 1 to 3, the pivoting around the X axis is ensured by a stud with a length, according to the direction of the stroke, less than or equal to 16 mm. It can also be provided that the clearance between the faces of the stud 5 and the faces of the slot 3 is greater than 0.5 mm. One can for example use a clearance between 0.5 and 1.5 mm. It is generally possible to provide a contact between the rail and the cursor close to a point contact. It is also possible to provide for the contact between the cursor and the rail to be close to a linear contact in a direction along the X axis. In general, the more the contact surface between the rail and the cursor is reduced, the more approximates the point or linear contact. It is also possible to provide a convex pad surface 5 with a curvature around

  the X axis in order to get closer to this type of contact.

  One can also provide a clearance along the axis X between the stud 5 and the bottom of the groove 3 greater than or equal to 3.5 mm. The occurrence of contacts between the stud and the bottom of the groove in this direction is thus avoided. A lack of parallelism of the rails thus does not block the cursor. The friction forces between the slider and the rail are thus reduced. One can also provide a clearance along the axis X between the stud 5 and the bottom of the groove 3 less than 7 mm. This can guarantee minimum guidance

  between the cursor and the background. This limit ensures that the cursor does not exit the rail.

  It is also possible to provide a variant of the invention in which the window regulator further comprises a cable return disposed in the travel of the slider. The

  reference 7 is a pulley disposed in the groove of the guide rail in the example.

  A cable passes through a groove in the return 7.

  The cable 8 is fixed in a fixing part 9 of the slider 4. This fixing part 9 has for example a first bore 11 opposite the pulley, allowing the passage of the cable 8. This fixing part 9 also has a \\ HIRSCH4 \ VOLI \ DACTYLO \ 18900 \ 1 8923EN.doc25110101- 11:10 - 318 second bore 12 leading to the first bore and located on an opposite face

  at this first bore. This bore has a section greater than the first bore.

  A shoulder is thus provided at the intersection of the two bores 11 and 12. By inserting the cable through the first bore, it then suffices to place a stop end piece 13, of section greater than the section of the first bore, on 1 ' end of the cable. The stopper tip 13 then comes into contact with the shoulder to secure the cable 8 on the slider 4. As can be seen in FIG. 3, another fixing part 14 can also be provided for fixing the '' another cable or from the other end of the cable 8 coming from a return arranged at another end

cursor travel.

  Preferably, a cursor having a recess 15 is used to allow the reference 8 to slide relative to the cursor in the direction of the cursor travel. The cursor travel can thus be increased, or the size of the window regulator I can be reduced for a given cursor travel. We can also provide that the cursor 4 has another recess 16, opposite the recess, to allow the sliding of another reference relative to the cursor following the

direction of the cursor travel.

  In the example shown in Figures 1 to 3, the cable 8 extends substantially in the direction of travel of the cursor between the gear and the fixing part. This

  characteristic is obtained by placing, for example, the fixing part 15 opposite

  screw between two cable returns. The guidance of the cable or cables in the returns is thus improved. On the other hand, the force to be applied on the cable to move the cursor varies

  bit along the cursor stroke.

  Provision may also be made for the window receiving part to extend beyond

  a return following the direction of the race, when the cursor is at the end of the race.

  This allows in particular to bring the glass receiving part 6 closer to the line of

  vehicle belt. This also makes it possible to obtain a size of lift

  reduced window for a given window reception and portion.

  The invention also relates to a door. FIG. 4 represents an embodiment of a door according to the invention. The door 17 comprises a window lifter as described above, a window 10 fixed to the window receiving part and a window frame. The window frame 18 blocks the pivoting of the window 10 around the axis X. It is thus possible to provide for the window to slide in a groove made in the window frame. The window is shown in solid lines in the closed position and in broken lines in the open position. The groove thus ensures the blocking of the

  pivoting and guiding the glass.

  In the example illustrated, the cursor guide rail 2 is formed in an extension of the window frame 18. It is thus possible to provide for guiding the cursor in the \\ HIRSCH4 \ VOLI \ DACTYLO \ 18900 \ 18923ENdoc-25/10 / 01- i1: 1048 groove used to slide the window. In this case, it is possible to envisage using the window lifter and the window frame as structural elements or as door reinforcements. Of course, the present invention is not limited to the examples and embodiments described and shown, but it is susceptible of numerous variants accessible to those skilled in the art. Thus, although we mentioned a window regulator having two rails and two sliders, we can also consider a window regulator with for example a single slider sliding in a single rail. Furthermore, although the guidance between the rail and the cursor has been described with a stud inserted in a groove, it is also possible to use any other guidance ensuring the essential functions of

The invention.

  \\ HIRSCH4 \ VOI'1 \ DACTYLO \ 1 8900 \ 1 8923FR doc- 25/1 0/0 1 - 11: 1 0 - 5/8

2831 587

Claims (9)

  1- Window regulator (1), comprising: -a guide rail (2); -a cursor (4): having a receiving part (6) of a window (10); -sliding relative to the rail following a guide race of the rail, pivoting about an axis (X) perpendicular to the race and placed in a plane parallel to the mean plane of a window attached to the party reception.   2- The window regulator of claim 1, characterized in that the slider (4) has an angular pivoting stroke in the rail greater than 2.8 degrees. 3- The window regulator of claim 1 or 2, characterized in that the cursor has a contact area (5) with the rail (2) of a length less than   16 rum according to a direction of the race.   4- The window regulator of one of claims 1 to 3, characterized in that it   also has: - a cable return (7) (8) arranged in the course of the cursor; - a cable (8) passing through the cable return; - a fixing part (9, 11, 12) of cable formed in the slider; - a recess (15) formed in the shaped slider for   allow the referral to slide.   - The window regulator of claim 4, characterized in that it further comprises: - another cable return disposed in the travel of the slider; - a cable passing through the other cable return; -a recess in the shaped cursor to allow the sliding of the other reference.   6- The window regulator of claim 4 or 5, characterized in that the receiving part (6) of window (10) extends in the direction of travel beyond   of the reference when the cursor is at the end of the travel.   H: \ DACTYL0 \ 18900 \ 1 8923EN.doc- 19/12 01- 13:12 - 6/8   7- The window regulator of one of claims 4 to 6, characterized in that the   cable (8) extends substantially in the direction of travel of the cursor   between the return (7) and the fixing part (9, l 1, 12).   8- The window regulator of one of the preceding claims, characterized in that   that: the rail has a groove (3);   -the cursor has a stud (5) inserted in the groove.   9- The window regulator of claim 8, characterized in that it has a play along its longitudinal axis between the stud and the bottom of the groove, upper at 3.5 mm.   10-Door (17) comprising a window regulator according to one of claims   preceding; further comprising a window (10) fixed on the receiving part (6) of window; a window frame (18) blocking the pivoting of the window around the axis pivot point.   11- The door of claim 10, characterized in that the guide rail is formed by the glass frame.