FR3089852A1 - METHOD FOR ATTACHING AN ADD-ON PART TO A PROFILED GLASS CORD USING AN INTERMEDIATE PART AND GLAZING OBTAINED BY SAID METHOD - Google Patents

Abstract

The invention relates to a method of fixing an insert (4), such as a trim, to the periphery of a glazing and in particular to a portion of a profiled bead fixed to the periphery of said glazing, said method comprising the step of assembling an intermediate piece (6) in said insert (4), said intermediate piece (6) comprising a rear face itself comprising at least one appendage, a step of positioning said appendage in a formed hole in said profiled bead so that the distal end (65) of said appendage projects beyond a rear face respectively of said profiled bead delimiting the hole and a step of deformation by temporary softening of said distal end (65) of said appendage to come into contact with said rear face of said profiled bead at the periphery of the hole. Figure of the abstract: Fig. 7

Description

Description

Title of the invention: METHOD FOR ATTACHING AN INSERTED PART ON A PROFILED WINDOW CORD BY MEANS OF AN INTERMEDIATE PART AND GLAZING COMPRISING AN ATTACHED PART ATTACHED TO A PROFILED GLASS CORD USING AN INTERMEDIATE PART

The invention relates to the fixing of an insert, in particular made of a metallic material, such as a trim, on the periphery of a glazing.

Throughout this document, the expression "insert" means an accessory to the glazing, in particular an accessory of elongated shape; it does not refer to a vehicle body element.

It is known from the prior art the international patent application WO 2011/039490 concerning a method of fixing an insert on a glazing or a profiled bead. According to this document, the insert has on its inner face several appendages having an elongated shape. These appendages were manufactured at the same time as the insert, for example by molding, or were fixed very securely to the insert, for example by welding or gluing. Each appendage has two ends according to their length. One end, the proximal end, of the appendage is thus connected to the interior face of the insert and another end, the distal end, which is remote from the interior face of the insert. The distal end of each appendage has passed through a hole previously made in the profiled bead or the glazing itself. It then undergoes softening, for example by application of ultrasound or by heating by thermal conduction with a heat source. The softening is then followed by hardening of the appendage material after removal of the softening source and the distal end is then frozen in its deformed shape. The insert thus comes to sandwich the flexible plastic material of the profiled bead between the inner face of the insert and the deformed distal end of the appendix. This produces compression of the profiled bead.

The disadvantage of this fixing method is that it is necessary to use a material deformable by softening for the insert. For example, hard plastics such as acrylonitrile-butadiene-styrene (ABS), acrylonitrile-butadiene-styrene-polycarbonate (ABS-PC), acrylonitrile-butadiene-styrene-polyamide (ABS) are used. -PA), polypropylene (PP), acrylonitrile-styrene-acrylate (ASA), polycarbonate (PC), polyamide (PA) or any other suitable hard plastic. Thus, an insert made of a very hard metallic material cannot be used. Furthermore, when the insert is obtained by molding or by plastic injection, the shapes of the insert must remain relatively simple in order to be able to produce it by means of these manufacturing methods.

Another drawback of the fixing method described in document WO 2011/039490 is that when a defect is found after hardening of one of the distal ends, for example a crack, the operator is obliged to discard the entire insert because it was forced to eliminate said distal end having a defect. Consequently, the insert is no longer usable and must be replaced.

It is also known from the prior art the international patent application WO 2014/049256 having in particular the subject of a method of manufacturing a glazing unit comprising a profiled seal using an intermediate part and a perimeter part to fix an insert, such as a hubcap, to said profiled joint. The drawback of the mechanical fastening system described in this document is that it is relatively complex to produce since it is necessary to manufacture an intermediate part and a perimeter part, and then to position this perimeter part in the profiled bead. It is also necessary to manufacture a specific tool to handle the intermediate piece.

The object of the invention is to overcome the drawbacks of the prior art by proposing a system for attaching an added part, such as a hubcap, to a profiled bead, making it possible to use a made added part. of a hard or even very hard material.

The fastening system according to the invention also aims to reduce the number of parts discarded when a defect occurs after bolting on the distal end of one of the appendages.

To do this, the present invention thus relates, in its broadest acceptance to a method of fixing an insert, such as a cover, on the periphery of a glazing and in particular on a portion a profiled bead fixed to the periphery of said glazing, the method comprising:

- A step of assembling an intermediate piece in said insert, said intermediate piece comprising a rear face itself comprising at least one appendage;

- A step of positioning said appendage in a hole in said profiled bead so that the distal end of said appendage projects beyond a rear face respectively of said profiled bead delimiting the hole;

- A step of deformation by temporary softening of said distal end of said appendage to come into contact with said rear face of said profiled bead at the periphery of the hole.

The present invention thus allows the use of an insert made of a very hard material, such as a metallic material. The appendages, meanwhile, are made of a material capable of being easily deformable by softening. In this way, the insert has greater resistance, in particular to impact and scratches. On the other hand, the invention makes it possible to produce the insert by means of various manufacturing processes, thus making it possible to design an insert having complex shapes.

Another advantage of the invention lies in the fact that when a defect arises on the distal end of one or more appendages, after softening and cooling, that is to say after gluing, it suffices for the operator to replace only the intermediate part. Therefore, the patch is not scrapped, saving material and time.

In a variant of the invention, said intermediate part is slid into said insert during the assembly step.

In this way, the assembly of the intermediate piece in the insert is quick and simple.

Preferably, said insert comprises a first wing oriented inwards creating a first groove and a second wing oriented inwards creating a second groove, said intermediate part comprising a first rail and a second rail slid respectively in said first groove and in said second groove during the assembly step.

Advantageously, said intermediate piece is slid into said added piece until one of its ends comes into abutment against said added piece during the assembly step.

The present invention also relates to a glazing, in particular obtained by the method according to the present invention, comprising an insert, such as a hubcap, fixed to the periphery of said glazing and in particular fixed to a portion of a profiled bead itself fixed to the periphery of said glazing, characterized in that said added piece further comprises an intermediate piece itself comprising a rear face comprising at least one appendage having a distal end, said at least appendage being housed in a hole made in said profiled bead and opening at each of its ends on a face of said profiled bead, said distal end of said appendage protruding beyond a rear face of said profiled bead delimiting the hole and in that said distal end of each appendage has been deformed by softening to come into contact with said rear face of said profiled bead at the periphery of the hole and preferably nce over the entire periphery of the hole.

According to a variant of the invention, said insert comprises a first wing oriented inwards creating a first groove and a second wing oriented inwards creating a second groove, said intermediate part comprising a first rail and a second rail disposed respectively in said first groove and in said second groove.

Preferably, said appendage comprises a cylindrical recess.

According to a variant of the invention, the insert comprises a rear face, said intermediate part comprises a front face itself comprising a first longitudinal protuberance in contact with said rear face and a second longitudinal protuberance also in contact with said back side.

Advantageously, the intermediate piece further comprises on one of its ends at least one tongue itself comprising a hook bearing on said first wing or on said second wing of said insert.

According to a variant of the invention, one of the ends of said intermediate piece is in abutment against said added piece.

Several embodiments of the present invention will be described below, by way of non-limiting examples, with reference to the appended drawings in which:

[Fig.l] illustrates a general exterior and front view of the complete glazing;

[Fig-2] is a perspective view of the glazing of Figure 1 without an insert;

[Fig.3] illustrates an interior view of the insert of Figure 1 with the intermediate piece and before their installation;

[Fig-4] shows a sectional view along B-B ’in Figure 2;

[Fig.5] shows a sectional view along A-A ’in Figure 2;

[Fig.6] shows a sectional view along C-C ’in Figure 1;

[Fig-7] shows a sectional view identical to that of Figure 6 but after bolting an intermediate piece;

[Fig.8] shows a sectional view along D-D 'of Figure 1;

[Fig.9] shows a detailed view of one end of the insert of the figure

3.

In these figures, the proportions between the different elements are respected and the elements in the background are, in general, not shown, in order to facilitate reading.

Figure 1 illustrates a glazing 1 intended to be fixed to the bodywork of a rear end of a motor vehicle and on the periphery of which a profiled bead 3 made of a flexible plastic material, within the meaning of the invention, has been realized.

The constituent material of the profiled bead 3 can be a polymeric material such as a thermoplastic (PVC, TPE, ...), a polyurethane or else a synthetic synthetic rubber of the EPDM type or any other suitable flexible plastic material.

The profiled bead 3 was manufactured by implementing a manufacturing process called "encapsulation" because it includes a step of molding the profiled bead 3 in a molding device, between two molding elements, an element of molding accommodating the interior face of the glazing and a molding element accommodating the exterior face of the glazing, these two molding elements being closed one on the other during the molding step.

In this document, the term "outside" indicates an orientation towards the outside of the vehicle intended to receive the glazing 1 according to the invention and the term "inside" indicates an orientation towards the inside of the vehicle intended to receive the glazing 1 according to the invention. Furthermore, the term "centrifugal" designates an orientation in a direction D, as shown in FIG. 6, which tends to move away from the center of glazing 1 and the term "centripetal" designates an orientation in direction D which tends to approach the center of the glazing 1, the direction D being parallel to the horizontal surface of the glazed element 2.

In Figure 1, the profiled bead 3 is disposed over the entire periphery of the glazing 1 but this profiled bead could quite well be positioned only on part of the periphery of the glazing or on any part of the glazing. The face of the glazing which is visible in FIG. 1 is the outside face of the glazing.

To improve the aesthetic appearance of the glazing, a portion of the profiled bead 3 visible from the outside of the vehicle is masked by an insert 4, such as a trim profile, which is here arranged only in the lower part of the glazing , but which could also be arranged on the entire periphery of the glazing 1 and / or on any part of the glazing 1.

The insert 4, in an exemplary embodiment of the invention, is made of a metallic material such as stainless steel. In another embodiment of the invention, the insert 4 is made of hard plastic and perhaps for example based on acrylonitrile-butadiene-styrene (ABS), acrylonitrilebutadiene-styrene-polycarbonate (ABS-PC), acrylonitrile-butadiene-styrene-polyamide (ABS-PA), polypropylene (PP), acrylonitrile-styrene-acrylate (ASA), polycarbonate (PC), polyamide (PA), ... or any other suitable hard plastic material. The insert 4 is plastic-based and can thus include fillers and in particular mineral fillers, such as glass fibers, or be coated with one (or more) layer (s) and in particular with a decorative layer on its front side. The insert 4 has a front face 40 which is the decorative face, seen from the outside; this front face can be coated, for example, with a coating giving the appearance of a metal and in particular of a chromed metal.

The insert 4 also has a rear face 41 which is oriented inward. This rear face 41 comprises an intermediate part 6 for fixing the insert 4 to said glazing 1.

The glazed element 2 of the glazing 1 can be monolithic, that is to say made up of a single sheet of material, or be composite, that is to say made up of several sheets of material between which at least one layer of adhesive material is inserted, in the case of laminated glazing. The sheet (s) of material may (or may) be mineral (s), in particular made of glass, or organic (s), in particular made of plastic. In the case of glazing for a vehicle, glazing 1 generally has at least partially, at its periphery, an ornamental strip (not shown). This ornamental strip generally results from a deposit of enamel, produced on the inside face of the glazing or on an intermediate face of the glazing for composite glazing, but it can also result from a partial and / or peripheral coloring d a sheet of material used, in particular a sheet of organic material.

When the glazed element 2 is made of organic material, it was manufactured prior to the implementation of the invention by molding the material constituting the glazed element 2 in a molding device comprising a mold comprising at less a fixed mold part and a movable mold part which is movable relative to the fixed mold part, said mold parts cooperating in the closed state of the mold, during the molding step, to form a molding cavity having in section the cross-sectional shape of the glazed element 2. Often, the glazed element 2 made of organic material is not flat but curved.

When the glazed element 2 is made of mineral material, it was manufactured prior to the implementation of the invention by melting mineral material into a flat sheet, then by cutting this sheet and optionally bending and / or quenching of this leaf.

In Figure 1, the glazed element 2 is a monolithic glazing.

The glazing 1 illustrated in Figure 1 is a fixed glazing, but the present invention can also be applied to a movable glazing.

According to the invention, the insert 4 is fixed to the periphery of the glazing 1 by means of the intermediate piece 6. Figure 3 illustrates the intermediate piece 6 housed in the insert 4 and having appendages 61. In order to reach this assembly, the intermediate part 6 is put in place by a sliding movement in the insert 4. The insert 4 has a first wing 42 and a second wing 43 arranged longitudinally, as illustrated in FIG. 6. The first wing 42 is oriented towards the inside of the insert 4 so as to create a first groove 44 and receives a first rail 62 of the intermediate part 6. The second wing 43 is also oriented towards the inside of the insert 4 to create a second groove 45 thus accommodating a second rail 63 of the intermediate piece 6. The combined piece 4 and intermediate piece 6 thus creates a slide oriented along a longitudinal axis relative to the vehicle. e receiving the glazing 1. The intermediate part 6 further comprises a rounded end 66 as illustrated in FIGS. 3 and 9. The rounded end 66 comes into contact with a stop 46 formed on one of the ends of the part insert 4. The stop 46 is positioned perpendicular to the rear face 41 of the insert 4. Thus, when the intermediate piece 6 is slid into the opening located at the opposite end of the stop 46, it suffices for the operator advancing, possibly "blind", the intermediate piece 6 until the rounded end 66 comes into contact with the stop 46. The assembly operation is therefore simplified.

Referring to Figure 9, the intermediate piece 6 is immobilized relative to the insert 4 by means of a first tongue 71 having a first hook 73 bearing on the first wing 42. The intermediate piece 6 also includes a second tongue 72 itself comprising a second hook 74 bearing on the second wing 43. The intermediate piece 6 comprises appendages 61 made on its rear face 64 and moreover holes 10 are made beforehand in the profiled bead 3. Each appendage 61 has a cylindrical recess 67. In another embodiment of the invention, each appendage 61 is full. The holes 10 are visible in Figure 2 and also in Figure 4 which illustrates a sectional view along the axis B-B 'of Figure 2. To fix the insert 4 and intermediate piece 6, the appendices 61 are introduced into the holes 10, then the distal end 65 of each appendage which projects out of the holes 10 is deformed by temporary softening to come into contact with the rear face 32 of the profiled bead 3 at the periphery of the corresponding hole 10 in which appendix 61 is housed. In order to be able to introduce the appendages 61 into the holes 10, it is necessary for each hole 10 to open at each of its ends on two opposite faces of said profiled bead 3. The hole 10 opens at its proximal end 13, closest to the rear face 41 of the insert 4, on the front face 35 of the profiled bead 3 (which happens to be the face turned outwards) and at its distal end 16 on the rear face 32 of the profiled bead 3 (which happens to be the face inward).

The holes 10 are operated beforehand because they are present in the in the profiled bead before the introduction of the appendix 61 therein; they are preferably made at the time of manufacture respectively of the profiled bead.

To be able to operate the bolting, that is to say the deformation by temporary softening of the distal end 65 of the appendages 61, the distal end 65 of each appendage 61 projects beyond the delimiting rear face the periphery of the hole 10 of the profiled bead 3.

The rolling is preferably carried out by application of ultrasound in the frequency range from 25 to 70 kHz, and preferably in the frequency range from 30 to 35 kHz. It is also possible to obtain the softening of the distal end 65 of the appendix 61 by heating by thermal conduction with a heat source, such as for example a metal rod heated to a temperature between about 150 ° C and about 200 ° C or any other means for heating the distal end 65.

In a particular variant of the method, mechanical pressure is applied to said distal end 65 at least during part of the softening time, and preferably during the entire softening period, or even for a longer duration (and in particular the pressure can be maintained for a period of 1 to 10 seconds after the withdrawal of the softening source; this mechanical pressure can possibly cause a flattening of the distal end 65 of the appendix 61).

In a very particular variant of the method, the distal end 65 of several appendages 61 (and preferably of all the appendages of the intermediate piece 6) are deformed simultaneously by temporary softening ((more preferably by application of ultrasound) ), to come into contact at the same time with a rear face 32 of said profiled bead 3 at the periphery of the hole 10 (and preferably over the entire periphery of the hole 10).

The fact that the distal end 65 has been deformed by softening can be deduced in a certain manner by simply looking at the glazing by the fact that the distal end 65 thus deformed cannot penetrate into the hole and thereby that no trace of purely mechanical deformation (such as a point or a fold line) is visible; in addition, the deformation by softening preferably causes a change in the appearance of the surface of the distal end with the appearance of blisters and / or change in color.

The appendages 61 are generally made integrally with the main part of the intermediate piece 6, that is to say that the entire intermediate piece 6, with its appendages 61, are produced together by molding; however, it is not excluded that the appendices 61 are themselves manufactured independently of the main part of the intermediate piece 6 and are attached, for example by gluing, against the rear face 64 of the intermediate piece 6.

The riveting is preferably carried out over the entire periphery of each hole 10, that is to say that the distal end 65 of the appendages 61 is deformed over its entire periphery so that the material of the distal end 65 after deformation is present around the entire periphery of each hole 10.

According to a particular aspect of the invention, the insert is fixed to the periphery of the glazing only by the snapped appendages at their distal ends projecting out of the holes of the profiled bead 3.

When the intermediate piece 6 is manufactured by molding, the main part, located between the front face and the rear face of this intermediate piece, does not necessarily have an identical thickness throughout its length. It is thus possible that the main part is thicker in the places where it undergoes more intense and finer stresses in the less stressed places.

The inner section of each hole 10 at least at its distal end 16 is substantially identical, or even slightly lower, to the outer section of said appendage 61 near this distal end 16 of the hole 10.

It is also possible that over a portion of several millimeters (1 to 5 mm), the inner section of each hole 10 is substantially identical, or even slightly lower, to the outer section of said appendage 61 over the entire depth of said hole 10 .

The appendix 61 (and preferably each appendage of the intermediate piece 61) may have in cross section with respect to its axis B an outer section which may be circular, oval, rectangular or square. The hole 10 which accommodates this appendage 61 (and preferably each hole accommodating an appendage like this) preferably has an inner section respectively circular, oval, rectangular or square, identical to the outer section of appendage 61.

FIG. 6 illustrates a simple appendage 61, with a hollow circular section, extending substantially perpendicular to the rear face 64 of the intermediate piece 6 at the periphery of the appendix 61. The appendix 61 has just been positioned in the hole 10 made prior to the introduction of the appendix 61. The axis of the appendix 61 and the axis of the hole 10 are merged.

However, it is possible to produce one (or more) of the appendages 61 of the intermediate piece 6 such that after positioning in the hole 10 the axis of the appendage 61 is not confused with the axis of hole 10 if the hole has a cross section wider than the cross section of the appendix and provided, however, that at least one appendage of the intermediate piece is such that after positioning in the hole 10 the axis of the appendix is coincident with the axis of the hole 10. This possibility is not illustrated here.

FIG. 7 illustrates the distal end 65 of the appendix 61 after gluing. The softened material having been contained by a semi-spherical counter-mold, the distal end 65 of the rolled tip has a semi-spherical shape (hemisphere or less than a hemisphere).

As can be seen by comparing FIGS. 6 and 7, the formation of the chuck had the effect of bringing the rear face 64 of the intermediate part 6 against the front face 35 of the profiled bead 3. The appendix 61 is located this fact with internal stresses slightly in tension between the distal end 65 snapped and the rear face 64 and the profiled bead 3 is therefore with internal stresses slightly in compression between its front face 35 in contact with the rear face 64 and its rear face 32 in contact with the distal end 65 sticked.

Figure 4 illustrates a sectional view along the axis B-B 'of Figure 2 and Figure 5 illustrates a sectional view along the axis A-A' of Figure 2. Figures 4 and 5 represent the intermediate piece 6 which is not yet positioned in the profiled bead 3. We can see the profiled bead 3 and the glazed element 2 assembled. This is the situation before the positioning of the assembly consisting of the insert 4 and the intermediate part 6 in the profiled bead 3.

Referring to Figure 8, we can see the intermediate piece 6 having a first longitudinal protuberance 69 disposed centripetally relative to the glazing 1 and a second longitudinal protrusion 70 disposed centrifugally relative to the glazing 1. Each protrusion longitudinal is arranged over the entire length of the intermediate part 6. The first longitudinal protuberance 69 and the second longitudinal protuberance 70 are in contact with the rear face 41 of the insert 4. These protrusions are of substantially rounded shape and thus make it possible to create a substantially rectilinear contact over the entire length of the insert 4. This assembly configuration thus makes it possible to eliminate the play that may exist between the intermediate part 6 and the insert 4 and, consequently, to avoid vibrations when the vehicle is running.

Claims (1)

Claims [Claim 1] Method for attaching an insert (4), such as a cover, to the periphery of a glazing (1) and in particular to a portion of a profiled bead (3) fixed to the periphery of said glazing (1 ), said method comprising: - A step of assembling an intermediate piece (6) in said insert (4), said intermediate piece (6) having a rear face (64) itself comprising at least one appendage (61); a step of positioning said appendage (61) in a hole (10) formed in said profiled bead (3) so that the distal end (65) of said appendage (61) projects beyond a rear face ( 32) respectively of said profiled bead delimiting the hole (10); - A step of deformation by temporary softening of said distal end (65) of said appendage (61) to come into contact with said rear face (32) of said profiled bead (3) at the periphery of the hole (10). [Claim 2] Fastening method according to claim 1, characterized in that said intermediate piece (6) is slid into said added piece (4) during the assembly step. [Claim 3] Fastening method according to claim 2, characterized in that said insert (4) comprises a first wing (42) oriented inwards creating a first groove (44) and a second wing (43) oriented inwards creating a second groove (45), said intermediate piece (6) comprising a first rail (62) and a second rail (63) slid respectively in said first groove (44) and in said second groove (45) during step d 'assembly. [Claim 4] Fastening method according to any one of claims 2 or 3 characterized in that said intermediate part (6) is slid into said insert (4) until one of its ends (66) abuts against said insert (4) during the assembly step. [Claim 5] Glazing (1), in particular obtained by the method according to any one of Claims 1 to 4, comprising an insert (4), such as a trim, fixed to the periphery of said glazing (1) and in particular fixed to a portion of a profiled bead (3) itself fixed to the periphery of said glazing (1), characterized in that said insert (4) further comprises an intermediate part (6) comprising itself a rear face (64) comprising at least one appendage (61) having a distal end (65), said at least appendage (61) being housed in a hole (10) formed in said profiled bead (3) and opening at each of its ends (13, 16) on one face (32, 35) of said profiled bead (3), said distal end (65) of said appendage (61) projecting beyond a rear face (32) of said profiled bead ( 3) delimiting the hole (10) and in that said distal end (65) of each appendage (61) has been deformed by softening to come into contact with said rear face (32) of said profiled bead (3) at the periphery of the hole (10) and preferably over the entire periphery of the hole (10). [Claim 6] Glazing (1) according to claim 5 characterized in that said insert (4) comprises a first wing (42) oriented inwards creating a first branch (44) and a second wing (43) oriented inwards creating a second branch (45), said intermediate piece (6) comprising a first rail (62) and a second rail (63) disposed respectively in said first branch (44) and in said second branch (45). [Claim 7] Glazing (1) according to any one of claims 5 or 6, characterized in that said appendage (61) comprises a cylindrical recess (67). [Claim 8] Glazing (1) according to any one of claims 5 to 7, characterized in that the insert comprises a rear face 41, said intermediate part (6) comprises a front face (68) itself comprising a first longitudinal protuberance ( 69) in contact with said rear face (41) and a second longitudinal protuberance (70) also in contact with said rear face (41). [Claim 9] Glazing (1) according to any one of claims 5 to 8, characterized in that the intermediate piece further comprises on one of its ends at least one tongue (71, 72) itself comprising a hook (73, 74) bearing on said first wing (42) or on said second wing (43) of the insert (4). [Claim 10] Glazing (1) according to any one of claims 5 to 9, characterized in that one of the ends (66) of said intermediate piece is in abutment against said added piece (4). 1/3