Guide for a sliding glazing

Abstract

Guide for a sliding glazing, in particular for an automobile, the guide being intended to be fastened onto a glazing and to cooperate with a glass run seal, the guide comprising a body made of a single piece and having an elongated shape along an axis (A), the body comprising: a fastening portion extending along the axis (A) and having a face configured to be fastened onto the glazing, and a guide portion extending along said axis (A) and being cross sectional L-shaped, the guide portion comprising a wall substantially parallel to the face and a free rib substantially perpendicular to the face, the free rib including at least one non-planar lateral face.

Claims

1. A guide for a sliding glazing, said guide being intended to be fastened onto a glazing and to cooperate with a glass run seal, said guide comprising a body made of a single piece and having an elongated shape along an axis, said body comprising: a fastening portion extending along said axis and having a face configured to be fastened onto the glazing, and a guide portion extending along said axis and being cross sectional L-shaped, said guide portion comprising a wall substantially parallel to said face and a free rib substantially perpendicular to said face, said free rib including a first lateral face facing said fastening portion and a second lateral face opposite to said first lateral face, wherein at least one of said first and second lateral faces is non-planar and includes an alternation of bumps and hollows.

2. The guide according to claim 1, wherein both first and second lateral faces are non-planar.

3. The guide according to claim 1, wherein at least one of said first and second lateral faces is corrugated or wave-shaped.

4. The guide according to claim 1, wherein said free rib has a substantially constant thickness along said axis.

5. The guide according to claim 1, wherein said free rib is shaped as a wave or a ripple.

6. The guide according to claim 1, wherein said free rib includes an alternation of portions having a thickness E1 and portions having a thickness E2 which is different of E1.

7. The guide according to claim 6, wherein E1 is lower than or equal to 0.85*E2 or is higher than or equal to 1.15*E2.

8. The guide according to claim 1, wherein said free rib is shaped as a pearl necklace.

9. The guide according to claim 1, wherein said wall and said free rib of said guide portion have a similar or identical length along said axis.

10. The guide according to claim 1, wherein said guide portion includes a single free rib.

11. The guide according to claim 1, wherein said wall is non-planar and/or has a non-constant thickness.

12. The guide according to claim 11, wherein said wall includes an outer face and an opposite inner face, said free rib extending from said outer face, at least one of said outer and inner faces being non-planar.

13. The guide according to claim 12, wherein at least one of said outer and inner faces includes an alternation of bumps and hollows.

14. A sliding glazing for an automobile, comprising a glazing and at least one guide according to claim 1, said at least one guide being fastened onto an inner face of said glazing.

15. A module for an automobile, comprising: a sliding glazing according to claim 14, a trim of a door frame, said trim extending along said axis and comprising an outer face intended to be substantially aligned with an outer face of said sliding glazing, and a glass run seal, said glass run seal comprising a strand which extends along said axis and which defines a recess for receiving said guide portion, said strand having an outer branch having an outer groove receiving a rim of said trim and an inner groove receiving said free rib.

16. The module according to claim 15, wherein said first and second lateral faces of said free rib are suitable to slide onto lateral faces of said inner groove, and said wall includes an outer face suitable to slide onto a portion of said outer branch defining said outer groove.

17. The module according to claim 15, wherein said strand of said glass run seal has a length which is lower than 150% of a guide length.

Description

DESCRIPTION OF THE FIGURES

(1) The invention shall be better understood and other details, characteristics and advantages of the invention shall appear upon reading the following description given by way of a non-limiting example and in reference to the accompanying drawings, wherein:

(2) FIG. 1 is a schematic perspective view of a door frame of a motor vehicle, this door fame being equipped with a glass run seal and a sliding glazing, FIG. 1 illustrating the prior art,

(3) FIG. 2 is a schematic perspective view of a vehicle bodyside, the glass run seal and the sliding glazing of FIG. 1 being shown without the door frame,

(4) FIG. 3 is a schematic and partial perspective view of the sliding glazing of FIGS. 1 and 2 and shows the guide fastened to the glazing,

(5) FIG. 4 is a schematic and partial cross-sectional view of the doorframe of FIG. 1 along line K-K, and shows the cooperation of the guide with the glass run seal,

(6) FIG. 5 is a schematic perspective view of a vehicle bodyside, this bodyside being equipped with a glass run seal and a sliding glazing according to an embodiment of the invention,

(7) FIG. 6 is a schematic and partial perspective view of the sliding glazing of FIG. 5 and shows the guide fastened to the glazing,

(8) FIG. 7 is a schematic perspective view of the guide of FIG. 6,

(9) FIG. 8 is a schematic and partial cross-sectional view of a door frame similar to the one of FIG. 4, and shows the cooperation of the guide with the glass run seal,

(10) FIG. 9 is a view similar to the one of FIG. 7 and shows an alternative embodiment,

(11) FIG. 10 is a view similar to the one of FIG. 8 with the guide of FIG. 9,

(12) FIGS. 11a-11d are sectional views of various embodiments of the guide according to the invention, FIGS. 11a and 11c being sectional views along lines M1-M1 or N-N of FIG. 8, and FIGS. 11b and 11d being sectional views along lines M2-M2 or N-N of FIG. 10,

(13) FIGS. 12a-12d are views similar to the ones of FIGS. 11a-11d and shows contact zones of the guide,

(14) FIGS. 13a-13d are views similar to the ones of FIGS. 11a-11d and shows other contact zones of the guide,

(15) FIG. 14 is a schematic cross-sectional view of another embodiment of the guide according to the invention,

(16) FIG. 15 is a schematic cross-sectional view of another embodiment of the guide according to the invention, and

(17) FIGS. 16a-16d are schematic perspective views of guides according to the invention and show various distributions of the contact zones along these guides.

DETAILED DESCRIPTION

(18) FIGS. 1 to 4 have been described above and illustrate the prior art to the invention.

(19) A first embodiment of the invention is shown in FIGS. 5 to 8.

(20) FIG. 5 is a view similar to the one of FIG. 2 and FIG. 6 is a view similar to the one of FIG. 3.

(21) FIG. 5 shows a glazing 12 and a glass run seal 10 as described above and differs from the ones of FIGS. 1 and 2 from two features.

(22) As shown in FIG. 5, the length D of the strand 10b of the glass run seal 10 of FIG. 5 is shorter than the length D′ of 4 of the strand 10b of the glass run seal 10 of FIG. 2. While the length D′ represents about 200% of the length L2 of the guide 14 of the prior art (FIGS. 2 and 3), the length D represents less than 150%, and preferably less than or equal to 120%, of the length L2 of the guide 114 according to the invention (FIGS. 5 and 6). The strand 10b of the glass run seal 10 comprises therefore a short portion extending below the belt line B, which allows reducing the costs of the door frame or at least the module including the glass run seal 10 and the sliding glazing 12 provided with the guide 114 according to the invention.

(23) The strand 10 of the glass run seal 10 may be made of a single elongated piece or made of two consecutive and independent elongated pieces, and for instance a first piece extending above the belt line B and a second piece extending below the belt line B.

(24) Despite the fact that these features are illustrated in FIG. 2 at the rear side 12c of the glazing 12, they can of course be applied to the front side 12d of this glazing 12. That means, a glazing may be provided with a guide according to the invention on its front or rear side. In case where the glazing would be provided with two guides at its front and rear sides, only one of these guides may be according to the invention.

(25) Reducing the length of the strand 10b of the glass run seal 10 is rendered possible by the guide 114 according to the invention and in particular by the fact that it includes a free rib 114b2 which extends all along the length of the guide 114, i.e., from its lower end to its upper end.

(26) The guide 114 has an elongated shape and includes a fastening portion 114a and a guide portion 114b which are made as a single piece. The fastening portion 114a extends along the axis of elongation A of the guide and has a face 114a1 intended to be applied and fastened onto the inner face 12a of the glazing 12, for instance by gluing. The guide portion 114b extends along the axis A and comprises a wall 114b1 substantially parallel to the face 114a1 of the fastening portion 114a and to the glazing 12. This guide portion 114b is received in the recess 18 of the glass run seal 10 and cooperates by sliding with its outer branch 10b2.

(27) The ascending strand 10b of the glass run seal 10 has a transversal or cross sectional section substantially in the shape of a U as described above and comprises two axially inner and outer branches 10b1, 10b2 connected together by a connection branch 10b3 (see FIG. 8). These branches 10b1, 10b2, 10b3 define therebetween the recess 18. The strand 10b is mounted onto the upright 8a of the frame of the corresponding door or onto the vertical trim 8b provided on this frame, and the outer face 12b of the glazing 12 laterally flushes with an outer face 8b1 of this trim 8b.

(28) The outer branch 10b2 of the glass run seal 10 has an outer groove 19 receiving a rim 20 of the trim 8b and an inner groove 22 receiving the free rib 114b2. The wall 114b1 cooperates by abutment with the branches 10b1, 10b2 so as to retain the glazing 12 in the direction Y, and the wall 114b1 is suitable to slide onto the outer branch 10b2 when the glazing 12 is moved. The free rib 14b2 cooperates by abutment with lateral faces 22a, 22b of the inner groove 22 so as to retain the glazing 12 in the direction X, and this free rib 114b2 is suitable to slide onto these lateral faces 22a, 22b when glazing 12 is moving.

(29) Glazing 12 is moveable from an upright position to a downright position as described above. Glazing 12 is guided up to its downright position by cooperation of its free rib 114b2 with the inner groove 22 of the glass run seal 10. Since the free rib 114b2 extends on the whole length of the guide 114, it cooperates with the lower end of the strand 10b which can be shortened as explained above. According to the invention, the frictional forces between the guide 114 and the glass run seal 10 are reduced when the glazing 12 is moving by using a guide 114 having one or more non-planar face(s).

(30) The free rib 114b2 includes a first lateral face 128 facing the fastening portion 114a and a second lateral face 130 opposite to the first lateral face 128. At least one of these lateral faces 128, 130 is non-planar.

(31) FIGS. 7 and 8 show a first embodiment of the guide 114 wherein both faces 128, 130 are non-planar. Each face 128, 130 is corrugated or wave-shaped and includes an alternation of bumps 132 and hollows 134. The bumps 132 of the face 128 are transversely aligned with the bumps 132 of the face 130, and the hollows 134 of the face 128 are transversely aligned with the hollows 134 of the face 130 which provide the free rib 114b2 with an alternation of portions 136 (including the bumps 130) having a thickness E1 and portions 138 (including the hollows 134) having a thickness E2 which is different of E1, and in particular higher than E1. In this embodiment, the free rib 114b2 has a shape similar to a pearl necklace. Two adjacent portions 136 are separated by a portion 138, and two adjacent portions 138 are separated by a portion 136.

(32) Preferably, the difference of thickness between E1 and E2 represents at least 15% of E1 or E2. In the present case, E2 is higher than or equal to 1.15.Math.E1. The difference of thickness between E1 and E2 may be for instance at most 70% of E1 or E2. In this case, E2 would be equal to or lower than 1.70.Math.E1.

(33) FIGS. 11a and 11c show that each bump 132 may have a curved top (FIG. 11a) or a planar top (FIG. 11c). The planar tops of the bumps 132 located on the face 128 may be parallel to the planar tops of the bumps 132 located on the face 130 as shown in FIG. 11c.

(34) The shape of the bumps tops has an influence about the type of contact between the free rib 114b2 and the lateral faces 22a, 22b of the inner groove 22.

(35) FIG. 12a shows that the free rib 114b2 can come into contact with the face 22a in contact zones located on the tops of the bumps 132 and FIG. 13a shows that the free rib 114b2 can come into contact with the face 22b in contact zones located on the tops of the bumps 132. The tops of the bumps 132 are in contact with the faces 22a, 22b along lines U1 which are oriented in the direction Z. The contact lines U1 are illustrated by dots in FIGS. 12a and 13a. The height of dimension of the contact lines U1 along direction Z depends on the height or dimension of the free rib 114b2 along direction Z.

(36) FIG. 12c shows that the free rib 114b2 can come into contact with the face 22a in contact zones located on the tops of the bumps 132 and FIG. 13a shows that the free rib 114b2 can come into contact with the face 22b in contact zones located on the tops of the bumps 132. The tops of the bumps 132 are in contact with the faces 22a, 22b along areas U2 which are parallel to direction Z. The contact areas U2 are illustrated by lines in FIGS. 12c and 13c.

(37) FIGS. 9 and 10 show a second embodiment of the guide 114 wherein both faces 128, 130 are non-planar. Each face 128, 130 is corrugated or wave-shaped and includes an alternation of bumps 132 and hollows 134. The bumps 132 of the face 128 are transversely aligned with the hollows 134 of the face 130, and the hollows 134 of the face 128 are transversely aligned with the bumps 132 of the face 130 which provide the free rib 114b2 with a substantially constant thickness E along axis A. In this embodiment, the free rib 114b2 has a shape similar to a wave or a ripple.

(38) FIGS. 11b and 11d show that each bump 132 may have a curved top (FIG. 11b) or a planar top (FIG. 11d). The planar tops of the bumps 132 located on the face 128 may be parallel to the planar tops of the bumps 132 located on the face 130 as shown in FIG. 11d.

(39) The shape of the bumps tops has an influence about the type of contact between the free rib 114b2 and the lateral faces 22a, 22b of the inner groove 22.

(40) FIG. 12b shows that the free rib 114b2 can come into contact with the face 22a in contact zones located on the tops of the bumps 132 and FIG. 13b shows that the free rib 114b2 can come in contact with the face 22b in contact zones located on the tops of the bumps 132. The tops of the bumps 132 are in contact with the faces 22a, 22b along lines U1 which are oriented in the direction Z. The contact lines U1 are illustrated by dots in FIGS. 12b and 13b. The height of dimension of the contact lines U1 along direction Z depends on the height or dimension of the free rib 114b2 along direction Z.

(41) FIG. 12d shows that the free rib 114b2 can come into contact with the face 22a in contact zones located on the tops of the bumps 132 and FIG. 13d shows that the free rib 114b2 can come in contact with the face 22b in contact zones located on the tops of the bumps 132. The tops of the bumps 132 are in contact with the faces 22a, 22b along areas U2 which are parallel to direction Z. The contact areas U2 are illustrated by lines in FIGS. 12d and 13d.

(42) According to other embodiments of the guide according to the invention, its wall 114b1 mays have an outer face 142 (intended to cooperate with the outer branch 10b2 and/or an inner face 144 (intended to cooperate with the inner branch 10b1) which is non-planar.

(43) FIG. 14 shows a guide 114 having a wall 114b1 which is shaped as a pearl necklace as described above. The description of the pearl necklace free rib 114b2 in relation to FIGS. 6 to 8 applies therefore to the pearl necklace wall 114b1 of FIG. 14.

(44) FIG. 15 shows a guide 114 having a wall 114b1 which is shaped as a wave or a ripple as described above. The description of the waved free rib 114b2 in relation to FIGS. 9 and 10 applies therefore to the waved wall 114b1 of FIG. 15.

(45) The illustrations and descriptions of FIGS. 11a to 13d apply also to the guides 114 of FIGS. 14 and 15.

(46) Depending on the amount and locations of the bumps of the free rib 114b1 and even of the bumps of the wall 114b1, the amount and locations of the contact zones along the guide may differ.

(47) FIGS. 16a to 16d show various examples of the distribution of these contact zones. In these non limitative examples, the number of contact zones is three or four. One contact zone Z1 is preferably be located at each longitudinal end of the guide 114. That means a bump 132 or a portion of a bump is preferably located at each longitudinal end of the guide 114.

(48) In case where the number of contact zones would be three, the third contact zone Z2 may be located at the middle of the guide 114 as shown in FIG. 16c, or close to one of the longitudinal ends of the guide 114 as shown in FIGS. 16a and 16d. In case where the number of contact zones would be four, the contacts zone Z1 and Z2 may be regularly distributed along the guide 114 as shown in FIG. 16b. Since the bumps 132 of the face 128 of the free rib 114b2 or of the face 142 of the wall 114b1 are not necessarily transversely aligned with the bumps on the opposite face 130 or 144, the locations and distribution of the contact zones may differ from one face 128, 142 to the other face 130, 144.