Patent EA-000609-B1 (EA)
Title: A window regulator, in particularly for vehicle windows
Inventor: PERAZZO PIERLUIGI
IPC: E05F11/48
Filed: 1997-05-20
Abstract: 1. A window regulator, particularly for vehicle windows, of the type comprising: - a translation unit (18) which comprises a fixed track (20) extending in the direction of movement of the pane (16) and a slide (22) slidable along the track and supporting the pane, a drive unit (24) which comprises a fixed housing (26), a drum (28) rotatable in the housing, and means (30) for rotating the drum, and - a transmission comprising a pair of flexible sheaths (32, 34) each having a first end (36, 38) anchored to the housing (26) and a second end (40, 42) associated with the translation unit (18), and a cable (46, 48) slidable in both of the sheaths (32, 34), extending around the drum (28), and having two opposite ends associated with the translation unit, characterized in that: - the second ends of the sheaths (32, 34) are anchored to the slide (22), - the slide (22) has a pair of internal ducts (50, 52) for guiding the cable (46, 48), the ducts extending between inlet openings to which the second ends (40, 42) of the sheaths (32, 34) are anchored, respectively, and respective opposed outlets facing towards respective opposite ends of the track (20), and - the two opposite ends of the cable (46, 48) are anchored to the respective ends of the track (20) so that respective portions (46a, 48a) of the cable disposed between the respective outlets and the respective ends of the track extend parallel to the track. 2. A window regulator according to Claim 1, characterized in that (Figure 3) the two ducts (50, 52) cross over inside the slide (22) without intersecting, one (50) of the ducts extending along a curved path from an inlet opening which is situated in an upper corner region of the slide (22) on the side facing the drive unit (24) and which has an axis converging downwardly with the track (20), to an outlet situated in a lower end of the slide (22) and facing towards the lower end of the track (20), and the other duct (52) extending along a curved path from an inlet opening which is situated in a lower corner region of the slide (22) on the side facing the drive unit (24) and which has an axis converging upwardly with the track (20), to an outlet situated in an upper end of the slide (22) and facing towards the upper end of the track (20). 3. A window regulator according to Claim 1, characterized in that (Figure 4), one (50) of the ducts inside the slide (22) extends along a curved path with a deflection substantially through 90 degree  from an upper inlet opening which is situated on a side of the slide (22) facing the drive unit (24) and which has an axis substantially perpendicular to the track (20), to an outlet situated in an upper end of the slide (22) and facing the upper end of the track (20), and the other duct (52) inside the slide (22) extends along a curved path with a deflection substantially through 90 degree  from a lower inlet opening situated on the same aforementioned side of the slide (22) and having an axis substantially perpendicular to the track (20), to an outlet situated in a lower end of the slide (22) and facing towards the lower end of the track (20). 4. A window regulator according to Claim l, characterized in that (Figure 5), the two ducts (50, 52) cross over inside the slide (22) without intersecting, one (50) of the ducts extending along a curved path from an upper inlet opening which is situated on a side of the slide (22) facing the drive unit (24) and which has an axis substantially perpendicular to the track (20), to an outlet situated in an upper end of the slide (22) and facing towards the upper end of the track (20), and the other duct (52) extending along a curved path from a lower inlet opening which is situated on a side of the slide (22) facing the drive unit (24) and which has an axis substantially perpendicular to the track, to an outlet situated in an upper end of the slide (22) and facing the lower end of the track (20). 5. A window regulator according to Claim l, characterized in that (Figure 6) the two internal ducts (50, 52) of the slide (22) cross over inside the slide (22) without intersecting and in that one (50) of the ducts inside the slide extends along a curved path from an inlet opening which is situated on a side of the slide facing the drive unit (24) and which has an axis substantially perpendicular to the track (20), to an outlet situated in one end of the slide and facing a corresponding end of the track (20), and the other duct (52) extends along a straight path, parallel to the track, from an inlet opening situated in an opposite end of the slide (22) to the aforementioned end, to an outlet situated at the other end. 6. A window regulator according to Claim 5, characterized in that (Figure 6) the duct (50) which follows the curved path has an outlet situated at a lower end of the slide (22) and facing the lower end of the track (20) and the inlet opening of the straight duct (52) is in this lower end. 7. A window regulator according to Claim 1, characterized in that the two ducts inside the slide extend along straight paths parallel to one another and parallel to the track, one from an inlet opening situated in an upper end of the slide to an outlet facing the lower end of the track and the other from an inlet opening situated in a lower end of the slide to an outlet facing the upper end of the track. 8. A window regulator according to any one of the preceding Claims, characterised in that the slide is constituted by a pair of coupled half-shells in each of which there are recesses which jointly define the two ducts.