EP0630170B1 - Electrical connection for window - Google Patents

Abstract

The invention relates to a window equipped with at least one accessory supplied with electrical signals. It is fitted with at least one electrical connection device comprising conducting elements and at least one cable comprising conducting filaments, at least part of the cable being fixed on the substrate involved in the construction of the window. <IMAGE>

Description

An example of glazing according to the preamble of claim 1 is described in EP-A-0 153 806.

The invention relates to equipment intended to electrically connect to the minus an accessory supported by glazing to non-glazed equipment, for example example to a power source, to sensors, to a radio, etc ... The invention also relates to the actual electrical connection. The invention also relates to glazing provided with such a connection.

There are different types of glazing requiring connection electric. These are, for example, heated, de-icing glazing, electrocontrolled optical properties or glazing fitted with sensors, an antenna, a traffic light, etc ...

These glazings can be used in the field of vehicles transport, for example automobile, rail, aeronautical or in the building field.

Usually, the electrical connection, supported by a substrate, entering in the constitution of the glazing consists of a foil or a layer conductive, for example based on silver paste deposited in particular by serigraphy. This electrical connection is connected, at the edge of the glazing, to a cable located outside the glazing, connected to non-glazing equipment. A seal sealing usually protects the connection from external stresses and especially humidity.

The substrate forming part of the glazing is at least partially transparent, it can be a glass sheet, it can be made of organic or mineral glass optionally coated with one or more mineral and / or organic layers. It may be an enameled layer (s), metallic layers based on metal oxides, in particular zinc oxides, ITO, SnO ₂ , SiO ₂ , Ag deposited, for example by pyrolysis or under vacuum of an organic coating, for example based on an organosilane and / or an optionally fluorinated organosiloxane (s).

For reasons of space, the cable carrying the signals electrical is usually located outside the glazing within the bay bodywork, for example. Furthermore, the electrical connection between the strip conductive and the cable is usually placed so that the length cable is reduced. So for a given vehicle, for example, the position of the connection to the glazing is imposed by the location of the cable in the body bay.

The imposed position of the connection can correspond to a curvature glazing, it can then be difficult to make the electrical connection. Through elsewhere, the imposed position of the connection does not always correspond to that elements requiring this electrical connection. It is then necessary to connect these two positions with a conductive strip, based on silver paste, for example. This conductive strip is not very aesthetic. In addition, the material used is generally expensive.

Furthermore, the electrical power that can carry a strip conductive depends in particular on its width. For a given width, the electrical power cannot exceed a certain value. This limitation may be troublesome when the width allowed for the conductive strip does not does not correspond to the desired power for the glazing.

The present invention overcomes these drawbacks.

The invention relates to glazing which can be supplied with a any electrical power for a width as small as 2 mm.

The invention further relates to glazing ready for fitting.

The present invention relates to a glazing unit fitted with at least one accessory supplied with electrical signals using at least one electrical connection comprising conductive elements, said device being consisting of at least one cable, at least part of the cable being, according to the invention, attached to the substrate used to form the glazing.

Cable is called conductive filaments capable of transmitting electrical signals, possibly coated with at least one sheath, by example a standard polyvinyl chloride sheath.

The position of the electrical connection of the cable to the accessories supplied with electrical signals can be, according to the invention, anywhere in the substrate, whatever the structure of the vehicle. It is preferably in periphery of the substrate and, preferably, at the edge of the periphery. She is advantageously located in the part of the substrate intended to be hidden. Of preferably the electrical connection is close to the accessories supplied with electrical signals. It is, for example, located, for a heated rear window, on the side of the glazing intended to be mounted in a amount, preferably in the center on this side. Because of this, the length of the conductive strip, based on silver paste for example, is thus limited. Her presence can be advantageously eliminated.

The cable of the invention can be fixed on the surface or on the edge of the substrate. It can be located within an area protected from solicitations external, for example within the so-called sealing zone, delimited by a seal. It can also be located outside this sealing zone. This is particularly the case when it is an opening glazing, that is to say a glazing which opens independently of the opening of a door. So he is subject to external stresses, such as air, water, detergent solutions as well as shock. It can also cross, at its exit from the glazing, the boundary between two zones, the so-called sealing zone and the so-called out zone seal.

The glazing of the invention may include several accessories supplied in electrical signals. Advantageously, these electrical accessories are connected to the same cable. One cable electrically connecting several accessories, the number of cable outlets is thus limited. The glazing of the invention advantageously comprises a single cable outlet.

The cable of the invention is fixed to the substrate directly or indirectly. It can be housed, for example, in a coating itself fixed on the substrate. This fixing can be by welding, using a tape adhesive or fasteners. It is advantageously fixed by gluing, in particular when exposed to sight. It is preferably glued using a ribbon comprising, on each of its faces, an adhesive layer. Any risk of overflow, due in particular to the creep of an adhesive, is thus eliminated. Through elsewhere, the bonding operation is particularly easy to implement.

To better match the variations in flatness and / or curvature possible glazing, the adhesive tape is preferably a foam comprising on each of its faces an adhesive layer. It is, by example, a foam of the acrylic type or of the polyurethane type.

Advantageously, after cleaning the surface to be bonded, a primer is applied to both the glazing and the cable. The applied primary on the cable can be of the chlorinated polypropylene type comprising ester groups.

The primer applied to the glass can be a mixture of isopropanol, mercaptosilanes and diaminosilanes. A second coat of primer at isocyanate base can optionally be applied. It can also be a resin based on a vinyl-polyurethane mixture.

The adhesion of the cable or, possibly its coating, on the glazing may have a resistance greater than or equal to 5 N / cm measured according to the so-called 90 ° peel test. The resistance value is satisfactory when, in particular, the cable is subjected to external stresses.

The shape of the cable can be semi-cylindrical or cylindrical. She is advantageously flat in order to limit its overall height. The form of the cable can be a function of the shape of the conductive filaments: they can form a flat braid or at least one wire.

The electrical connection between the cable and the accessories supplied with electrical signals is provided by electrical contact between the end of the conductive part of the cable and a conductive part electrically connected to the elements. This contact can be ensured by welding, advantageously by ultrasound, the insertion of two terminals or any other appropriate means. According to a embodiment of the invention, the conductive filaments of the cable are in direct electrical contact with at least one accessory supplied with signals electric.

According to an advantageous variant, at least one conductive element of the glazing is covered by a coating. This coating can hide the visible element. It also protects, in a way, the element conductor of any possible shock. This is, for example, an element conductor located on one side of the substrate or on the edge of the substrate, for example a conductive strip, the conductive filaments of the cable or a electrical connection. It can also advantageously ensure sealing of the conductive element when it is located outside the sealing zone.

The material constituting the coating is chosen from the materials following: polyvinyl chloride, polyurethane, EPDM (Ethylene Propylene Diene Monomer), polysulfide, polyamide or a mixture of polyurethane and polyamide.

Preferably, at least part of the conductive filaments of the cable is embedded in a coating. This coating, called sheath in the following the description can be extruded in order to limit its size on the glazing. It can also be molded or, advantageously, molded.

The material constituting the cable sheath must be an electrical insulator and have sufficient mechanical strength not to be damaged by any possible collision. In addition, it must be waterproof and saline atmosphere, especially when exposed to the atmosphere surrounding. These are, for example, polyvinyl chloride, polyurethane, a mixture of polyurethane and polyamide or a rubber, for example of the EPDM (Ethylene Propylene Diene) type Monomer). It is, for example, a polyurethane. In order to improve its fixing on the glazing, in particular when the sheath is advantageously glued, the latter has according to the invention a flat base. In order to get a satisfactory fixing, the width of its base is advantageously greater than or equal to 2 mm. The dimensions of the base of the sheath are obviously a compromise between, on the one hand obtaining a good adhesion and, on the other hand a reduced bulk. The height of the sheath can also be small than 5 mm or even 2 mm. Two sheaths can optionally be superimposed on each other. The inner sheath is, for example, a sheath standard, generally sold with the conductive part of the cable.

The cable according to the invention may have changes in direction. When the sheath is extruded, preferably using, according to the invention, a foam type material in order to obtain good adhesion at the level of the curvature, especially when the radius of curvature is short or there is a sharp corner. The inventors have thus shown that with this type of material, the bonding area was the same at direction changes only at the level of the straight segments. Another solution, according to the inventors, is use a cable whose sheath is coextruded so that, at the level of direction changes, expose the inner sheath more low volume. The use of a coating with two superimposed sheaths allows, in addition, to fix the cable in areas where the cable congestion needs to be reduced, partially stripping the cable while retaining its insulating characteristics.

The profile of the sheath of the invention may preferably include, at minus one lip applied to the glazing. The aesthetic aspect is all the better.

A coating can also be a profiled part covering a conductive element, in particular an electrical connection and / or the filaments cable conductors. In a way, it oversees the conductive element. The latter is, for example, located on a flat or curved part of the glazing. Its dimensions are a function of the dimensions of the element driver. For an electrical connection, they can be calculated from so as to cover any clearance between the conductive part of the cable and its sheath. It can also cover at least part of the strip conductive, thus masking it from view and / or ensuring its sealing. As indicative, its width is, for example, between 20 and 25 mm, its length between 30 and 40 mm and its height between 3 and 5 mm. The profiled part can have the shape of a parallelepiped, a semi-cylinder or, advantageously, a trapezoid: for the same base surface, ensuring its fixing, its size is reduced. Any other form can also be considered; advantageously, the conductive element, in particular the filaments cable conductors, are supported by a base in order to obtain both precise positioning of the cable and to avoid any possible deviation from glazing geometry.

The material constituting the coating of the electrical connection, of a conductive strip and / or conductive filaments of the cable can be identical to that constituting the cable sheath. It can also be a other material. It is, for example, this polyvinyl chloride, polyurethane, polysulfide or polyamide, preferably reinforced. The coating of the connection and / or a conductive strip and the cable does not can form only one part, especially if this coating is overmolded. They can also form several separate pieces, preferably when these are several machined or molded parts, glued to the glazing.

According to an advantageous variant, the coating of the conductive element ensures its tightness. It can, for example, be located outside the area seal, delimited by a seal and thus be subjected to external stresses.

An adhesive is then advantageously injected inside the cavity formed by the profiled part, in order to ensure its tightness. It ensures also advantageously its membership. A primer can be applied on glazing before gluing. It is, for example, a glue of hot-melt type, preferably of the polyamide type. The coating can, possibly serve as a mold, being removed later.

The invention also relates to a means for preventing any infiltration. humidity in the sealing area when, in particular, the cable passes through, its exit from the glazing, the limit between the so-called non-waterproofing zone and the zone sealing. This is particularly the case when the cable is outside the area delimited by a seal, the signal supply source being in an area protected from stresses exterior by a gasket. This configuration is found, for example, when the glazing and opening, i.e. it is likely to open independently of the opening of a door. The cable can then lead to penetration of moisture into the so-called sealing zone. However, the equipment in this area is not necessarily coated with waterproof protection.

According to an advantageous variant, the part of the cable passing through at its outlet outside the glazing, the boundary between the sealing area and the non-sealing area is embedded in an insert with a fixing means intended to fix it on the substrate.

The fixing means can be a part or a lug integral with the insert, this part or this leg being intended to be fixed on the substrate in particular by bonding. They can also be fixed using an adhesive tape optionally comprising on each of its faces a adhesive layer, a fastener such as a jumper or any other suitable means. According to an advantageous variant, the fixing means is an anchoring mechanical between the insert and an auxiliary part, itself fixed on the substrate. The part may thus not be in contact with the glazing, avoiding thus any extra thickness. According to a particularly advantageous variant, this auxiliary part constitutes the coating of a conductive element, in particular of a part of the cable situated outside the sealing zone. She can then hide the electrical connection from view. It can also possibly ensure, or at least improve, its sealing. On the other hand, its presence eliminates any deviation relating to the dimension of the connection electric. The insert of the invention can also be attached to the substrate using mechanical anchoring and, part or leg, fixed glazing.

Mechanical anchoring is ensured, preferably, by a bulge on one of the parts, the insert or the auxiliary part, the other part comprising the complementary part.

The insert of the invention can have other functions than those inherent in the tightness of the cable embedded in it. It can, by example, include fixing means for a rear-view mirror, means for air or water supply or any other function in the measurement where this function is necessary at the location of the glazing where the connection comes electric outside the glazing. The insert of the invention comprises, advantageously, a lip intended to ensure the continuity of a lip also secured to a mounting joint facilitating the mounting of the glazing in a bay.

The insert can be prefabricated, attached and fixed on the substrate used in the constitution of the glazing. It is, for example, molded around part of an electrical connection, attached and fixed to the substrate. It can also be molded directly on the substrate provided with said electrical connection.

The molding technique allows, in particular, to obtain relatively small dimensions while being precise, which makes it possible to limit the size of the insert on the glazing. The dimensions of the added part depends on the intended use. The height of the room depends, in particular, on the nature of the overmolded connection. She can also be small than 2 mm. Its width also depends on the width of the link and, possibly the number of wires present. It is, for example, understood between 4 and 100 mm. Its length is, for example, between 4 and 100 mm.

• la figure 1 représente une vue partielle de dessus de deux côtés d'un vitrage de l'art antérieur,
• la figure 2 représente une vue partielle de dessus de deux côtés d'un vitrage selon l'invention,
• la figure 3 représente une deuxième variante d'un vitrage selon l'invention, vue de dessus,
• la figure 4 représente une troisième variante d'un vitrage selon l'invention, vue de dessus,
• la figure 5 représente une quatrième variante d'un vitrage selon l'invention, vue de dessus,
• la figure 6 comporte quatre schémas représentant le câble selon l'invention, vu de dessus,
• la figure 7 comporte deux schémas de profils de la gaine du câble, selon une coupe longitudinale,
• la figure 8 représente, plus en détail, une sortie de câble selon l'invention, en perspective,
• la figure 9 représente une deuxième sortie de câble selon l'invention, selon une coupe schématique longitudinale,
• la figure 10 représente un schéma en perspective de l'enrobage d'une connexion électrique,
• la figure 11 représente une coupe schématique longitudinale de l'enrobage d'une connexion électrique fixée sur le vitrage
• la figure 12 représente, en coupe, des enrobages, du type pièces profilées, les filaments conducteurs du câble étant supportés par des embases,
• la figure 13 représente un vitrage dont le câble traverse, à sa sortie, la limite entre la zone d'étanchéité et la zone hors étanchéité,
• la figure 14 représente une coupe selon la ligne I-I de la pièce rapportée décrite sur la figure 13,
• la figure 15 représente une coupe selon la ligne II-II de la pièce rapportée décrite sur la figure 13,
• la figure 16 représente cinq schémas 16a à 16d, en coupe, d'une pièce rapportée de l'invention,
• la figure 17 représente, en coupe, une pièce rapportée munie d'une lèvre.

The following description relates, in more detail, to the glazing according to the invention with reference to the figures in which:

• FIG. 1 represents a partial top view of two sides of a glazing unit of the prior art,
• FIG. 2 represents a partial top view of two sides of a glazing according to the invention,
• FIG. 3 represents a second variant of a glazing according to the invention, seen from above,
• FIG. 4 represents a third variant of a glazing according to the invention, seen from above,
• FIG. 5 represents a fourth variant of a glazing according to the invention, seen from above,
• FIG. 6 comprises four diagrams representing the cable according to the invention, seen from above,
• FIG. 7 comprises two diagrams of profiles of the cable sheath, in a longitudinal section,
• FIG. 8 represents, in more detail, a cable outlet according to the invention, in perspective,
• FIG. 9 represents a second cable outlet according to the invention, in a longitudinal schematic section,
• FIG. 10 represents a perspective diagram of the coating of an electrical connection,
• Figure 11 shows a schematic longitudinal section of the coating of an electrical connection fixed to the glazing
• FIG. 12 shows, in section, coatings, of the profiled parts type, the conductive filaments of the cable being supported by bases,
• FIG. 13 shows a glazing whose cable crosses, at its exit, the limit between the sealing zone and the non-sealing zone,
• FIG. 14 represents a section along line II of the insert described in FIG. 13,
• FIG. 15 represents a section along line II-II of the insert described in FIG. 13,
• FIG. 16 represents five diagrams 16a to 16d, in section, of an added part of the invention,
• FIG. 17 represents, in section, an attached part provided with a lip.

Figure 1 shows two sides of a glazing according to the prior art.

The glazing 1 comprises in this figure two electrical connections 2 and 3. In this figure, it is a monolithic glazing comprising a network of fine electric resistance heating wires 4. Each heating wire 4 is electrically connected to two header strips 5 and 6. They are, for example, made of silver paste deposited by screen printing. Their width is a function of the electrical power of the glazing. The electrical connections 2 or 3 are, in general, consisting of a metal strip 7 or 8 welded to the ends header strips 5 and 6 respectively. The connections as well as the collecting strips are located in the sealing zone delimited by the seal seal shown in 9.

Element 2 is shown in the unconnected position, while element 3 is shown in the connected position.

The end of the conductive part of a cable 10, housed in the bay bodywork, is for example plugged into the metal strip 8.

This figure illustrates the relatively large area of the strip collector in order to connect each heating wire 4 to the electrical connection 2 or 3.

Figure 2 is a view of two possible sides of a glazing according to the invention. It is the same type of glazing as that illustrated in Figure 1. The electrical connections 11 and 12 according to the invention, are located near the heating wires 4 for the same position of the wiring 10 of the body bay vis-à-vis the glazing. This arrangement makes it possible to reduce the length of the strips Collectors 5 and 6. Advantageously, their width also decreases, as illustrated in the figure, thereby reducing the amount of silver paste used while improving the aesthetics of the glazing. Connection 11 is shown coated while connection 12 is shown uncoated according to the position of the seal 9 and 15, shown in dotted lines in the figure.

The electrical connection consists, for example, of a strip metallic 13 capable of being plugged into the end of the filaments cable conductors 14. It can also be a solder connection or by any other means. Advantageously, it is a welding by ultrasound. The conductive filaments 14 of the cable are in the form of wire (s) or flat braid (s). The metal strip 13 and the conductive filaments 14 can be left bare as illustrated in the figure by the position of the seal sealing 9.

Due to the position of the seal 15, the connection 11 and the conductive filaments 16 of the cable are coated. The cable attached to the substrate is here consisting of conductive filaments 16 and a sheath 17. The latter conforms to the shape of the conductive filaments 16 so as to both provide sealing, reducing bulk and avoiding any infiltrating dirt between the conductive part 16 and the sheath. The sheath 17 comprises, of preferably a flat base to facilitate its fixing. It is, preferably, semi-cylindrical or flat depending on the shape of the conductive part of the cable. To ensure satisfactory sealing outside the sealing zone, as shown in the figure, it is preferably a sheath in polyurethane.

The coating 18 of the connection 11 is here shown in the form trapezoidal in order to increase its surface in contact with the glazing. This coating allows, moreover, to camouflage, while ensuring sealing, a any play existing between the conductive filaments 16 of the cable and the sheath 17.

Furthermore, the collector strip 6 is here represented in the zone sealing delimited by the gasket 15. It can, according to the invention, be located in outside this sealing zone. It is then covered with the same type as the coating 18 of the connection 11. It may be possibly from the same room.

FIG. 3 represents an advantageous variant of the invention. Alone part of the glazing is shown. The two header strips 5 and 6 are connected to the same cable 19. Cable 19 can also connect electrically one or more other accessories requiring a power supply electric. By way of illustration, it connects a stop light 20 to a power source electric. It can also connect an antenna, optical devices ... glazing then has only one cable outlet, referenced at 21. The outlet cable 21 can, of course, be located anywhere on the glazing. She is here shown in the upper part of the glazing. An insert 22 can, if necessary, ensure the junction between the different conductive parts from both sides of the glazing.

Figure 4 is a schematic view of a bottom of the windshield, out of the sealing area, represented by hatching and delimited by the seal sealing 23. Thin electrical resistance wires 24 allow, for example, to defrost the area of the windscreen near the windscreen wipers. Two connections 25 electrically connect these wires 24 to a electric power source via a cable 26 fixed on the substrate.

FIG. 5 represents an advantageous variant according to which the surface of a header strip is reduced or removed. Conductive filaments of the cable form a metal braid in direct electrical contact with at minus an accessory supplied with electrical signals, for example wires 4. A coating 28 of the electrical connections can optionally To be scheduled. It can cover all or part of the connections, such as shown in the figure, depending on the position of the seal, not shown.

In order to avoid an electrical connection for each heating wire 4 to the braid 27, a collecting strip 29 can, for example, electrically connect all these heating wires. The cable of the invention then consists of filaments conductors 30 partially or completely covering the strip 29. A single connection between the strip 29 and the conductive filaments 30 is then necessary. The conductive filaments 30 can optionally be covered with a coating not shown.

Figure 6 has four diagrams showing the cable attached to the glazing according to the invention. In diagram 6a, the cable comes along the edge of the glazing at 31. It can be maintained by an adhesive tape 32, by fasteners or any other means. It can advantageously be embedded in the joint sealing and, preferably, molded together. A fixing means advantageously maintains the cable at its curvature. It is, by example, of a jumper as illustrated schematically in 33. This means also allows to improve the aesthetics of the glazing and the tightness of the cable. In diagram 6b, the cable describes a radius of curvature on the part glazing device. The radii of curvature here illustrated are sufficiently important so that the adhesion of the cable to the glazing is satisfactory at level of the radius of curvature. The radii of curvature can also be smaller or the cable can describe sharp angles. Cable sheath is then advantageously molded or overmolded in the desired directions. It can also be extruded. In this case, the material used is, from preferably a foam.

Another solution is illustrated in diagrams 6c and 6d according to which the cable describes a sharp angle or a small radius of curvature, although the material used for its sheathing is not a foam. The cable is made up, besides conductive filaments not shown, two sheaths 34 and 35 superimposed on each other. The sheath 34 can be a standard sheath, cylindrical, PVC. The sheath 35 is exposed at the level of the radius of curvature and brings up the sheath 34. The cable can then run on the glazing, as illustrated in diagram 6c or along the edge of the glazing, as illustrated in Figure 6d. It is advantageously bonded to the surface of the substrate, according to diagram 6c and held by an adhesive tape or a clip 32 depending on the Figure 6d. The sheath 35 may not be present when the cable extends along the glazing, as illustrated in diagram 6d. Cable size, in particular er height, is thus reduced. Obviously when the sheath 35 is exposed, the sheath 34 must have the appropriate properties, in particular sufficient sealing, especially when the cable is located outside the area sealing.

FIG. 7 represents a schematic section of a sheath 36 fixed on glazing. It preferably comprises lips 37 allowing, both to improve its fixation on the glazing and to camouflage the bonding of the sheath. Two lips can be provided on either side of the sheath body, as illustrated. It is also possible to provide a single lip. This sheath 36 can coat the conductive filaments 38 of the cable. These filaments conductors can possibly be coated themselves for a second sheath not shown.

These conductive filaments 38 can form several threads, such as illustrated in diagram 7a. Each thread is made up of a multitude of filaments conductors. They can also form a single thread. Filaments conductors can be flat, as shown in Figure 7b. On the diagram 7b, the sheath has a recess 39 capable of being filled with glue. The tightness of the conductive filaments of the cable is all the more improved. This glue can possibly overflow into the cavities 40 formed by the lips 37.

Figure 8 shows a cable outlet on the glazing. It is a jumper 41, the shape of which overlaps each of the faces of the glazing. It has a channel 42 into which part of the cable is inserted according to the invention. The cable is thus securely held in the desired position in glazing outlet. The two wings 43 and 44 of the rider are shown here uneven length. It goes without saying that they can be of identical length or that the wing 43 can be smaller than the wing 44. The dimensions of the cavity 45 formed by these two wings are a function of the dimensions of the glazing. They may be such that they provide mechanical support for the rider on the glazing. Glue can optionally be applied to improve this maintenance. The material constituting this fixing means is preferably rigid.

Figure 9 shows another variant of cable outlet according to the invention. It is a connection element comprising a female terminal in which the end 46 of the conductive filaments of the cable 47 of the invention. A coating 48 allows, by its shape, both keep the cable in position and improve the tightness of this connection electric. An adhesive tank 49 is provided in order to seal the connection. The cable 50 is the cable which is intended to run in the bay of body.

Figure 10 shows a section of the coating of the connection. A flange 51 ensures the junction with a cable 52 and the connection. The cable 52 consists of conductive filaments 53 and two sheaths 54 and 55. Part of the sheath 54 is covered by the coating 56. Any play between the conductive part 53 and the sheath 54 is thus covered by the coating 56. The cable 52 can obviously only consist of a part conductive and a sheath or that of a bare conductive part. Cable 52 may possibly not be attached to the substrate. The conductive part 53 is electrically connected to a metal strip 57 electrically connected accessories supplied with electrical signals. Once the connection with the two conductive parts 53 and 56 ensured, the coating 55 is maintained in position by any means. Glue is injected through the injection hole 58 ensuring the tightness of the connection and, if necessary, the adhesion of the coating 56 on the glazing. The coating may have a semi-cylindrical shape, parallelepiped or trapezoidal. Its base is adapted to the profile of the glazing. Advantageously, it deforms slightly under the effect of the injection of the glue, at high temperature, thus adapting perfectly to the glazing profile, especially when it is curved. The width of its base is, for example, between 20 and 25 mm and its length is between 30 and 40 mm. These dimensions are obviously a compromise between a good surface of bonding and reduced dimensions. In order to clearly define its size, this coating is advantageously molded and glued to the glazing. he can also be overmolded, possibly together with other elements functional and / or at least one seal.

FIG. 11 represents a longitudinal section of a glazing according to the invention. The glass 59 is covered, over at least part of its periphery, of an enamel 60. This enamel hides from view the conductive part 61, generally white in color. On this conductive part 61, is fixed a terminal metal 62 to ensure electrical connection. Coating 63 according to the invention makes it possible to camouflage both the conductive part 61 and the terminal 62.

Such a coating, placed and fixed on the surface of a glazing, can also sealing while camouflaging any conductive element, for example a conductive strip. It has the advantage of improving the aesthetics of the glazing while ensuring a perfect seal, especially when glue is injected into its cavity. The conductive elements thus coated can be placed, for example outside the sealing area.

Figure 12 shows different types of profiled parts covering the conductive filaments 64 of the cable. The profiled piece 65 is fixed on a base 66 supporting the conductive filaments 64. This base can include pins 67 intended to cooperate with the pins 68 of the part 65. The base is here shown glued using an adhesive layer 95.

FIG. 13 represents a glazing whose cable passes through, at its exit from the glazing, the boundary between a sealing zone and an out of sealing zone.

In this figure, the cables 69 and 70 are connected respectively to two collecting strips 5, 6 made, for example, from base paste silver deposited by screen printing. Each strip is connected to fine wires of electrical resistance 4 constituting a heating network.

Cables 71 and 72 are connected to a traffic light. signaling 20, for example a stop light. Coating 65, of the part type profiled, advantageously covers cables located outside the area sealing delimited by the gasket 73. In this figure, the heating network and the collecting strips 5 and 6 are located in the sealing zone referenced AT.

The cables, on the other hand, are located outside the sealing area, in the so-called out-of-tightness area, referenced B, for example outside the vehicle. Part 74 ensures the passage of cables from outside the vehicle, that is to say from the non-sealing zone referenced B to the sealing zone referenced C, here inside a bellows 75 in communication with inside the bodywork bay, area protected from external stresses and, in particular, humidity.

References A, B and C respectively denote the interior of the vehicle, for example interior, exterior of vehicle and hidden space inside the body, in which all the cables circulate. The joint 73 delimits on this figure zones A and B, while zones B and C are delimited by limit 76 of the bodywork bay.

Passage from inside to outside of the vehicle, i.e. from the area A in zone B, is preferably carried out thanks to the presence of a coating of organic type described, for example, in the French patent application no published FR 93/09595, deposited on a conductive layer, for example a part 77, 78 of the collector strips 5 and 6 respectively.

Sealing of the electrical connection passage from zone B to zone C is ensured by the presence of the part 74 according to the invention. A bellows 75 may also be provided to guide the cable (s) in zone C to the desired location, usually to a signal source electric. In this figure, the part 74 is fixed to the substrate by an anchoring mechanical between part 74 and coating 65.

Figure 14 shows a section along line I-I of the insert 74 described in figure 13. The electrical connections are represented here under form of four cables 69, 70, 71 and 72. These four cables are made up a conductive wire 79, itself made up of conductive filaments, not shown, each wire 79 being coated with a sheath 80. This is, for example, of a standard sheath marketed with the lead wire. Of course, several insulated wires can be coated with the same sheath 80. Part of these cables 69, 70, 71 and 72 is embedded in an insert 74. This part 74 is made of a thermoplastic or thermosetting material having watertightness, or even a satisfactory saline atmosphere. He can, possibly have electrical insulation and resistance mechanical enough not to be damaged by any possible impact. The material is a thermoplastic or thermosetting elastomer chosen, by example, in the following group: polyvinyl chloride, polyurethane, mixture of polyurethane and polyamide, rubber, in particular of the type EPDM (Ethylene Propylene Diene Monomer). This piece is, for example, molded around part of cables 69, 70, 71 and 72. The presence humidity between the cables and the material constituting the part 74 is thus avoided.

In this figure, the part has a bulge, here represented under form of a flange 81 in order to ensure its fixing to a glazing by a mechanical anchoring. Mechanical anchoring can also be ensured by a recess, a projection, a recess, a stop, etc ... and their part complementary respectively.

The cables are shown here coated with a sheath. It can be a standard sheath, for example made of polyvinyl chloride, or a sheath 17, 35, 36 as shown, for example, in Figures 2, 6 and 7. They can also be, at least partially, devoid of this sheath in function of the intended use. The four cables can also be gathered in the same sheath, not shown, at their exit from the room reported 74.

Figure 15 shows a sectional view, along line II-II, of Figure 13. The coating 65 is attached to a flange 81 secured to the part 74. The cables 69, 72 are shown here covered with a part 65, so that the cables 70 and 71, connected to a signaling light 20, are not covered with such a room. They can be optionally coated with a sheath 17, 35, 36. It can be seen in this diagram that the part 74 is not in contact with the substrate 83, avoiding the presence of an excess thickness on this latest. Furthermore, the auxiliary part 65 has a constriction 82 intended to hang onto the flange 81. The part 65 is fixed to the substrate using, by example, an adhesive layer or an adhesive tape not shown.

FIG. 16 represents different variants, in section, of the part reported 74 according to the invention.

Part of the cable, here made of a wire, is embedded in a part 74 according to the invention.

In diagram 16a, this part includes a flange 81 to which a coating 65 and a base 85 are attached to it. In this diagram, the two parts 65 and 85 are on the same face of the substrate 83. The substrate 83 may be optionally coated with one or more layers, not represented (s). These parts can also be on both sides opposite of the substrate 83. The base 85 is, for example, a base fixed on the substrate and supporting the link 84. This base makes it possible, in particular, to get rid of any differences in geometry of the glass sheet. The room 74 is not in contact with the substrate 83.

In the following diagrams 16b, 16c and 16d, at least part of the piece 74 is fixed on the substrate 83.

The piece 74 can be fixed using a bulge 86 and by a tab 87 fixed to the glass sheet (diagram 16b). Bulge 86 and leg 87 can be on the two opposite faces of the substrate 83 (diagram 16b) or on the same face (diagram 16c).

Part 88 of part 74 can also be fixed on the substrate (diagram 16d). This part fixed to the substrate may possibly have a smaller thickness to ensure the passage of the connection under the joint sealing 89. The connection ensuring this passage, 90, is then preferably a conductive layer, a copper strip, a foil and / or a copper plate of the type used in printed circuits. A cable 91 can possibly provide the electrical connection in the area enclosed by joint 89.

FIG. 17 represents a profiled insert 74 comprising a lip 92 making it possible to ensure the continuity of a lip, not shown, also secured to a mounting joint. This unrepresented lip ensures protecting, centering and maintaining the glazing for the time necessary to the grip of the adhesive bead 93 fixing the glazing to the bay 94 of the bodywork. The glue bead 93 can possibly seal the glazing / opening.

These figures are given without limitation as examples of production. Of course, only a marginal part of the cable can be located in a non-waterproof area.

Claims (20)

1. Glazing pane equipped with at least one accessory (4, 20, 24) supplied with electrical signals from electrical equipment situated outside the glazing pane, the electrical connection being implemented by means of at least one electrical connection device comprising conductive elements (5, 6, 11, 12, 13, 25, 27, 29, 57, 62) disposed on the glazing-pane substrate forming part of the glazing pane, the said device consisting of at least one cable (10, 19, 26, 47, 52, 69, 70, 71, 72) situated outside the glazing pane and comprising conductive filaments (14, 16, 30, 38, 53, 61, 64), possibly covered with a sheath (17, 34, 35, 36, 54, 55, 80), the accessory being connected to the conductive elements which are themselves connected to the cable, characterised in that the cable also passes in the area of the glazing pane beyond the area at which the cable arrives at the edge of the glazing pane and is fixed to the substrate.
2. Glazing pane according to Claim 1, characterised in that one and the same cable electrically connects several accessories (4, 20) supplied with electrical signals.
3. Glazing pane according to Claim 2, characterised in that the glazing pane comprises only one cable outlet (21).
4. Glazing pane according to Claim 1, characterised in that the cable is fixed either directly or indirectly to the substrate by means of a foam comprising an adhesive layer on each of its faces.
5. Glazing pane according to Claim 1, characterised in that at least one conductive element of the electrical connection is covered with a coating (18, 28, 48, 56, 65).
6. Glazing pane according to Claim 5, characterised in that the material constituting the coating is chosen from amongst the following materials: polyvinyl chloride, polyurethane, EPDM (ethylene propylene diene monomer), polysulphide, polyamide or a mixture of polyurethane and polyamide.
7. Glazing pane according to Claim 5, characterised in that the coating is a profiled piece (65) covering a conductive element, in particular the conductive filaments of the cable and/or an electrical connection.
8. Glazing pane according to Claim 7, characterised in that the profiled piece comprises a cavity within which a hot-melt glue is injected.
9. Glazing pane according to Claim 7 or Claim 8, characterised in that the conductive element is supported by a base (66).
10. Glazing pane according to Claim 4, characterised in that the coating is a sheath (36) within which the conductive filaments of the cable are embedded, the said sheath being in particular fixed to the substrate by adhesive bonding.
11. Glazing pane according to Claim 10, characterised in that the profile of the sheath comprises at least one lip (37) applied against the glazing pane.
12. Glazing pane according to Claim 10, characterised in that the sheath is extruded.
13. Glazing pane according to Claim 10, characterised in that the cable is composed of two superimposed sheaths.
14. Glazing pane according to Claim 10, characterised in that the sheaths are coextruded.
15. Glazing pane according to Claim 1, characterised in that the conductive filaments of the cable are in direct electrical contact with at least one accessory supplied with electrical signals.
16. Glazing pane according to one of the preceding claims, characterised in that the cable, at its exit from the glazing pane, passes across the boundary between two areas, the area (C) referred to as the sealing area and the area (B) referred to as the non-sealing area, the part of the connection intended to cross the boundary between these two areas being embedded in an attached piece (74) comprising a fixing means intended to fix it to the substrate.
17. Glazing pane according to Claim 17, characterised in that the fixing means is a part or a lug (87) fixed to the attached piece, the said lug or part being intended to be fixed to the substrate, in particular by adhesive bonding.
18. Glazing pane according to Claim 16 or Claim 17, characterised in that the fixing means is a mechanical anchoring between the attached piece and an auxiliary piece intended to be fixed to the substrate.
19. Glazing pane according to Claim 18, characterised in that the mechanical anchoring is provided by a bulge (81) situated on a piece, attached or auxiliary, the other piece comprising the complementary part.
20. Glazing pane according to one of the preceding claims, characterised in that the attached piece (74) comprises a lip (92) intended to provide the continuity of a lip, attached moreover to a mounting joint in order to facilitate the mounting of the glazing pane in an opening.

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