FR2705391A1 - Device for the guidance and retention of a descending window - Google Patents

Abstract

Device for the guidance of a descending window (21) along parallel slideways (22, 23) mounted between the exterior and interior panels (24, 25) of a vehicle door, in which device the lower edge (26) of the window carries a retention member (27) cooperating with a pivoting support arm (30) mounted rotatably about a shaft (32) fastened to the door, characterised in that the window (21) carries, on the one hand, a member (38) for actuating the support arm (30) in the direction of bringing the said arm (30) to bear on the retention member (27) carried by the window, and in that a wedging member (211) in contact with the lateral edge of the window immobilises the said edge in relation to the adjacent slideway (23).

Description

DEVICE FOR GUIDING AND RETAINING A GLASS
DESCENDING
The invention relates to a device for guiding and retaining a glass descending along a slide mounted between the exterior and interior panels of a vehicle door and in which a support for the glass cooperates with an arm for controlling the movement of the glass placed under the dependence of an actuating mechanism.

The publication FR-A-1132273 and its addition FR-A-69502 describes a descending window supported by a cross member suspended from the mechanism for controlling the movement of the window.

On certain windows, for example those of convertibles, the window is not guided above the upper edge of the door.

During the sliding movement of the window in the upward direction, it is held jointly by the slides while the outer face of the window is subjected to a vacuum during the advancement of the vehicle.

The transverse bending forces which are exerted on the glass then generate vibrations capable of modifying the quality of maintenance of the glass.

To remedy this drawback, it has been sought to stiffen and wedge the upper part of the slides of the window.

To this end, publication FR-A-69502 describes a set of individually adjustable shims fixed to the door panel and bearing on a wing of the profile of the slide.

To improve the guidance of such a window, publication FR-A-2056982 describes a cable compensation system intended to prevent unwanted rotation of the window in its plane.

The implementation of these devices requires assembly and adjustment operations outside the vehicle production line.

The invention relates to a device for guiding and retaining a side window of a motor vehicle, the components of which are mainly rigidly connected to the window.

The invention also relates to such a device, the slides of which first guide the lateral edges of the glass and in which the glass retaining elements oppose an unwanted rotation in the plane of the glass capable of create a leak and parasitic hissing while the vehicle is moving.

According to the invention, the window carries an actuating member of a pivoting support arm retained by the lower edge of the window and mounted for rotation about an axis fixed to the door, in order to ensure the setting in support of said arm on a retaining member carried by the glass while a wedging member in contact with the lateral edge of the glass, immobilizes said edge relative to the adjacent slide.

According to another characteristic of the invention, the axial distribution of the retaining and wedging members respectively along the support arm and of the slide makes it possible to balance the forces exerted respectively at the level of the support of the arm on the member retaining, on the axis of rotation of said arm and at the level of the wedging member carried by the glass.

This balancing of the stresses exerted on the glass prevents any parasitic movement in the plane of the glass.

The invention will be described in more detail below, using an embodiment of the device, with reference to the accompanying drawing in which: - Figure 1 is a schematic representation of a vehicle equipped
of a sliding window guide device, - Figure 2 is a perspective representation with partial cutaway,
a motor vehicle door fitted with the guide device and
retaining the sliding window according to the invention, - Figure 3 is an elevational view of the rear part of the door
with partial removal of the exterior panel, equipped with the
guiding and retaining the glass in the open position of the glass, - Figure 4 is an elevational view of the rear part of the door
with partial removal of the exterior panel, equipped with the
guiding and retaining the window in the closed position of the window, - Figure 5 is a partial sectional view of the guide device according to
the line VV of FIG. 4, FIG. 6 is a view in partial section of the guide device according to
line VI-VI of Figure 4, - Figure 7 is a cross-sectional view of the door along the line
VII-VII of Figure 4, - Figure 8 is a view on a larger scale of the embodiment detail
of the articulation axis of the support arm.

FIG. 1 represents a motor vehicle defined by its bodywork 1.

Each side door 2 of the vehicle is equipped with a movable descending window 21, along parallel slides 22, 23 respectively mounted between the exterior 24 and interior 25 panels of the door 2.

The lower edge 26 of the window 21 carries an actuating support 261 of a window lifter mechanism known per se, not shown.

When the vacuum prevailing on the outer face of the glass 21 tends to tilt the glass in the direction of the arrow F1 in FIG. 7, the part of the glass 21 located between the outer 24 and inner 25 panels is subjected to a force in the opposite direction directed along arrow F2. This effort exerts a stress on the slides 22, 23 and on the window 21. The latter can thus be moved transversely from the surface of the body during its movement.

According to the invention, the lower edge 26 of the window carries a retaining bracket 27 rigidly connected to the window 21 which defines with the inner face of said window the housing of the end of a pivoting support arm 30.

The pivot 31 of the arm 30 is constituted by a hollow pin 32 mounted on a support 33 screwed on the inner panel 25 as shown in Figures 7, 8. The lower end of the arm 30 carries for this purpose a socket 34 mounted on the axis 32 and held on the said axis by a bolt 35.

In order to limit the deformation of the arm 30, the latter has a bent section, the free upper end of which is constituted by a control fork 36.

The mobility of the arm 30 around its axis 32 is ensured by an actuating pin 38 rigidly connected to the window 21. The pin 38 is in abutment on the lateral flank of the arm 30 and communicates to said arm a rotational movement during the upward movement of the window 21 until the fork 36 is inserted into the stirrup 27.

On the other hand, during the downward movement of the window 21, the pin 38 is supported on the lateral flank of the tooth 361 of the fork to exert on said flank a sufficient force to extract the fork 36 from the stirrup 27.

In order to avoid any parasitic transverse movement of the bottom of the window 21, the lateral flank of the fork 36 carries vibration damping pads 362, 362 'intended to bear on the stirrup 27 and on the corresponding face of the window 21 in a housing delimited between said stirrup 27 and window 21.

In order to promote the guiding and the maintenance of the lateral edge of the window 21 in the high position, said edge is in contact with shims 211 rigidly connected to a guide bracket 231.

To this end, the slide 23 carries the stirrup 231, the branches of which respectively carry wedges 211, in order to obtain in the high position of the window 21, a balancing of the forces exerted respectively at the level of the support of the arm 30 in the stirrup 27, on the axis 32 and at the level of the shims 211 carried by the stirrup 231.

Without departing from the scope of the invention it is of course possible to add to the window 21 an additional arm such as 30 in order to immobilize the window also relative to the slide 22 and / or to modify the structure of the arm and wedging and retaining means.

Claims (3)

1) Device for guiding a descending window (21) along  parallel slides (22, 23) mounted between the outer panels and  interior (24, 25) of a vehicle door and in which the edge (26)  lower of the window carries a retaining member (27) cooperating with  a pivoting support arm (30) mounted for rotation about an axis (32)  fixed to the door, characterized in that the window (21) carries a  share an actuating member (38) of the support arm (30) in the direction  pressing said arm (30) on the retaining member (27)  carried by the window and a wedging member (211) in contact with the edge  side of the glass, immobilizes said edge relative to the slide  adjacent (23). 2) Device according to claim 1, characterized in that the axis  of rotation (32) of the arm (30) and of the retaining and wedging members  (27, 211) in contact with the window (21) are distributed axially along  said arm (30) and on the adjacent slide (23) in order to obtain  a balancing of the forces exerted respectively at the level of  the support of the arm (30) on the retaining member (27), on the axis of  rotation (32), of said arm (30), and at the level of 11 wedging member  (211) of the window. 3) Device according to claim 2, characterized in that the  surface of the window (21) and the retaining member (27) of the support arm  (30), delimit a housing for receiving a damping block of  vibrations (362, 362 ') carried by the support arm (30) while the wedge  (211) in contact with the edge of the window (21) is immobilized between the  branches of a stirrup (231) mounted on the slide (23) of the glass.