EP1745190A1 - Method for accurately mounting an insert on a glazing - Google Patents

Method for accurately mounting an insert on a glazing

Info

Publication number
EP1745190A1
EP1745190A1 EP05739370A EP05739370A EP1745190A1 EP 1745190 A1 EP1745190 A1 EP 1745190A1 EP 05739370 A EP05739370 A EP 05739370A EP 05739370 A EP05739370 A EP 05739370A EP 1745190 A1 EP1745190 A1 EP 1745190A1
Authority
EP
European Patent Office
Prior art keywords
glazing
insert
stamping
added element
glass
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05739370A
Other languages
German (de)
French (fr)
Inventor
Laurent Lamoureux
Laurent Silvestrini
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
Original Assignee
Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saint Gobain Glass France SAS, Compagnie de Saint Gobain SA filed Critical Saint Gobain Glass France SAS
Publication of EP1745190A1 publication Critical patent/EP1745190A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F11/00—Man-operated mechanisms for operating wings, including those which also operate the fastening
    • E05F11/38—Man-operated mechanisms for operating wings, including those which also operate the fastening for sliding windows, e.g. vehicle windows, to be opened or closed by vertical movement
    • E05F11/382—Man-operated mechanisms for operating wings, including those which also operate the fastening for sliding windows, e.g. vehicle windows, to be opened or closed by vertical movement for vehicle windows
    • E05F11/385—Fixing of window glass to the carrier of the operating mechanism
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
    • E05Y2600/50—Mounting methods; Positioning
    • E05Y2600/52—Toolless
    • E05Y2600/526—Glueing or cementing
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
    • E05Y2600/60—Mounting or coupling members; Accessories therefore
    • E05Y2600/626—Plates or brackets
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/45—Manufacturing
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/45—Manufacturing
    • E05Y2800/46—Injection moulding
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/69—Permanence of use
    • E05Y2800/692—Temporary use
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/53—Application of doors, windows, wings or fittings thereof for vehicles characterised by the type of wing
    • E05Y2900/55—Windows

Definitions

  • the present invention relates to a method for assembling glazing, in particular curved glazing for a motor vehicle and at least one attached element of the door type. window, said method comprising a step of positioning said added element with respect to said glazing and a step of fixing said added element to said glazing. It also relates to a glazing obtained by the implementation of the process, a glass holder for the implementation of the process, a set of window holders for the implementation of a particular variant of the process and an installation of assembly for implementing the method according to the invention. It is known in the prior art to assemble one or more glass holders on glazing and to connect the glass holder (s) to a drive mechanism in order to allow the window to be raised or lowered using an automation. It is for example known from French patent application No.
  • FR 2 807 054 a window provided with a window holder made of a resin type material chosen from a group of particular resins, said window comprising an adhesive layer urethane containing a silane coupling agent formed between the glass positioned in the groove of the glass holder and the glass holder.
  • EP 1 178 175 which relates to a system for positioning and assembling a very complex window comprising: - an adapter element having a first extension in the extension of the window and a second extension in the longitudinal direction of the window; - A slider element guided in at least one rail secured to a door of the vehicle and driven by a drive device housed in said door; said slider being provided with a third extension in the longitudinal direction of the glass, at least one guide block secured to an element of the drive device and guided along a rail, as well as a wall vertical comprising a first vertical contact surface capable of cooperating with one of the faces of the first extension of the adapter element, the second extension of which cooperates with the third extension of the slider so as to allow a slight relative movement between the adapter and the cursor under the action of a longitudinal force applied to the glazing before its fixing; - a confinement element comprising a contact surface;
  • the glazing when the glazing is mounted in the door, the glazing can be adjusted in the vertical direction of the vehicle by moving the adapter between the cursor and the locking element and in the longitudinal direction by the action of the third extension of the cursor on the second extension of the adapter.
  • This solution is tedious to implement and generates a loss of time that is too great for the car manufacturer who seeks to have the car assembled in a minimum of time.
  • This document reveals in particular the possibility, when the glass holder is fixedly fixed to the glazing, to make an adjustment of the geometry of the glass holder by removing material, in order to adapt the relative position of the glass holder relative to the mechanism drive (moving cursor).
  • This document also reveals the possibility of making up for deviations in the shape of the glazing by modifying the positioning of the glazing holder relative to the glazing by using a glazing holder having a slight clearance in the direction normal to the glazing.
  • the glass holder is thus fixed to the glazing by means of two adhesives, a slow adhesive and a fast adhesive, after relative displacement of one relative to the other in a suitable position.
  • the operation of machining the glass holder requires carrying out an excess of material on the glass holder and then removing part of this material.
  • the object of the invention is to overcome the drawbacks of the prior art by proposing a process in which the assembly of the glass holder to the glazing is carried out quickly, at rates compatible with those of upstream production, without having to multiply the number of assembly stations and while making it possible to achieve very precise assembly so that the assembly thus assembled has the high precision required.
  • a die-forging operation that is to say an operation of plastic deformation of the glass holder between two impressions called "dies" positioned very exactly with respect to the glazing would achieve the required accuracy very quickly, without causing a significant risk of breakage of the adjacent glazing.
  • the present invention thus relates in its broadest sense to a method of assembling glazing, in particular curved glazing for a motor vehicle and at least one insert of the window-holder type, said method comprising a step of positioning said added element with respect to said glazing and a step of fixing said added element to said glazing, said added element undergoing a shaping step by stamping.
  • This stamping shaping step is preferably carried out by taking reference to the glazing.
  • the shaping step by stamping is also preferably carried out after said fixing step.
  • Said insert preferably has at least two parts, a first part cooperating with said glazing and a second part intended to cooperate with a drive system and the shaping by stamping is preferably carried out only on said second part.
  • Said insert preferably consists of an aluminum-based alloy.
  • the ali iinium-magnesium-silicon alloys of the 6000 series are preferred because they can be produced in the form of profiles of complex shapes. They also have an average mechanical strength (180 to 380 MPa) allowing them to be shaped by stamping. Grade 6060 (Mg: 0.35% at 0.60%; If: 0.3% to 0.6%) very often used in metal joinery is particularly adequate. It has an elastic limit of around 120 MPa.
  • the fixing step preferably includes the insertion of at least one insert between the glazing and said added element. In a variant, the insert is produced by injection.
  • the insert is preferably made of hot-melt resin.
  • the shape of said added element (s) is chosen from among several possible shapes in function of tolerance dimensions measured on the glazing.
  • the shape of said added element (s) is chosen from among several possible shapes in function of tolerance dimensions measured on the glazing.
  • the shape of said added element (s) is chosen from among several possible shapes in function of tolerance dimensions measured on the glazing.
  • they are dies simultaneously.
  • the present invention also relates to glazing, in particular curved glazing for a motor vehicle comprising at least one insert of the window-holder type, said glazing being obtained by implementing the method according to the invention.
  • This glazing preferably comprises at least one insert, this insert being in a variant made of thermofasible resin and preferably being produced in this variant by injection.
  • the insert forming the glass holder preferably has at least two parts, a first part cooperating with said glazing and a second part intended to cooperate with a drive system, only said second part being shaped by stamping.
  • said at least second part of the added element forming a glass holder and more preferably the entire added element has an elastic limit of at least 50 MPa and more preferably at least 100 MPa, to allow the stamping operation.
  • the present invention also relates to a glass holder having in cross section substantially an H shape consisting of two parallel walls and a shank formed by stamping for implementing the method according to the invention.
  • This glass holder preferably consists of an aluminum-based alloy.
  • each glass holder of the set having at least two parts, a first part intended to cooperate with said glazing and a second part intended to cooperate with a drive system and window-holders of the game having different positioning of their first part relative to their second part.
  • the present invention finally relates to an installation for assembling a glazing, in particular a curved glazing for a motor vehicle and at least one added element of the window-holder type, for implementing the method according to the invention, said installation comprises a stamping station of said one or more added element (s).
  • Said stamping station preferably includes a template for maintaining said glazing during the stamping operation.
  • the installation includes an injection station for an insert of hot-melt resin.
  • the present invention makes it possible to manufacture glazing units fitted with glass holders having very low manufacturing tolerances by means of an extremely rapid forming operation which is very easily integrated into the process for manufacturing curved glazing units and / or soaked.
  • the present invention can be implemented with any type of glazing, including laminated glazing.
  • the present invention has been developed for glazing incorporated in doors having no lateral or greater uprights at the level of the glazing when the latter is raised, but it can also be used for glazing incorporated in doors with lateral or higher uprights at the glazing level when the latter is reassembled.
  • FIG. 1 illustrates a front view of a front glazing of a vehicle provided with two doors window according to the invention
  • Figure 2 illustrates a sectional view of a glass holder according to the invention attached to a window
  • Figure 3 illustrates a side view of a front window glazing vehicle with two glass holders according to the invention undergoing a stamping operation in a stamping installation
  • Figure 4 illustrates a detailed view of the bits of the die-forging installation of Figure 3
  • Figure 5 illustrates a detail and side view of Figure 3
  • Figure 6 illustrates a detailed view of the movable upper jaw
  • Figure 7 illustrates three glass holders for the implementation of the so-called “multi-support” variant. It is specified that the proportions between the various elements shown in the figures are not strictly observed in order to facilitate reading.
  • FIG. 1 illustrates a glazing (1), in particular a curved glazing for a motor vehicle, provided with two substantially different added elements of the window holder type (2a, 2b) having in cross section substantially a shape in h.
  • FIG. 2 illustrates a detailed view of the glass holder (2b) of FIG. 1.
  • This glass holder (2) thus has: - a first part consisting of two parallel walls (3, 4) connected to their base and forming a longitudinal groove, that is to say forming in cross section a U-shape, and - a second part consisting of a tail (5) extending opposite the parallel walls (3, 4) with respect to the base connecting these walls.
  • the assembly is carried out in such a way that said parallel walls (3, 4) of said h-shape embed said window (1) in its lower part, the tail (5) then being substantially in the glazing extension (1).
  • This h shape of the glass holder is particularly advantageous because it allows the transmission of forces between the glass holder and the glazing over a large area corresponding to the sum of the interior surfaces of the parallel walls (3, 4); however, it is quite possible to use a simple plate for implementing the assembly method according to the invention, this plate having at least two parts: a first part for cooperation with the glazing and a second part for cooperation with the drive mechanism.
  • the glazing (1) is curved and the parallel walls (3, 4) and the tail (5) are flat; however it is possible that the parallel walls (3, 4) and / or the tail (5) are curved.
  • the tail (5) extends approximately from the half of the base connecting the parallel walls (3, 4), but it is also possible to position the tail (5) in the extension of one or the other parallel walls (3, 4).
  • the tail (5) is not parallel to the walls (3, 4).
  • the axis A illustrating the mean plane of the glazing (1) at its lower end when the latter is correctly positioned with respect to the glass carrier (2), the tail (5) is oriented at a non-zero angle -with respect to axis A and which is a function of the bending of the glazing (1).
  • the tail (5) is intended to be connected to a motorized drive system not shown to allow the glazing (1) to go up and down in the vehicle door.
  • the assembly is carried out on a template allowing the control of tolerances on the glass holder (2) / glazing (1) assembly.
  • the glass holder (s) (2) is (or are) glued (s) using an adhesive, for example polyurethane, then “shod (s)” on the glazing (1), this is that is, it is (are) positioned so that the glazing is introduced in the U-shape, in abutment or not, by inserting between said parallel walls (3, 4) and said glazing (1) inserts (6) made of plastic, such as for example polypropylene.
  • thermoplastic hot-melt resin for example based on polyamide.
  • the injection of the inserts when the glass and the glass holder are correctly positioned in relation to each other thus guarantees the position of the glass holder at least at the first part of the glass holder, whatever the curve of the glazing.
  • the hot-melt resin used has an elastic limit of approximately 5.5
  • N / mm 2 and a breaking strength of 11 N / mm 2 calculated according to DIN 53455. It must be used at a temperature of around 220 ° C and has a viscosity of about 5000 at this temperature. mPa.s, measured according to standard ASTM D 3236.
  • an additional adhesive to perfectly fix the insert to the parallel walls and to the glass.
  • the inserts (6) added or manufactured in-situ by injection thus serve to maintain the glazing (1) relative to the parallel walls (3, 4) with respect to the lateral forces.
  • the invention it is proposed to operate a deformation in a hydraulic press of the second parts of the added elements, that is to say the tails (5) of the glass holders (2), after the pre-assembly of the holders. glass on the glass and in-situ positioning or manufacturing by injection of the inserts (6).
  • This stamping operation is carried out in an assembly installation (10) like that illustrated in FIG. 3.
  • the stamping of the tails can be carried out while the gluing of the glass is not yet final or after the polyurethane adhesive has completely hardened.
  • the glass holders used are preferably made of aluminum alloy. The forging operation then generates a deformation of the material which can be detected by fine analysis of the glass holder because it causes the partial breaking of the fiber.
  • a vertical pressing force of 30 to 50 tonnes is sufficient, i.e. related to the size of the glass holders, forces about 150 GPa for window holders in hours from overall dimension of approximately 40x30 mm and approximately 450 GPa for glass holders in h of overall dimension of approximately 60x60 mm.
  • Other materials can be considered provided that they have an elastic limit of at least 50 MPa and preferably at least 100 MPa. This stamping solution allows reaching final tolerances of +/- 0.5 mm with respect to the glazing reference frame with a speed of operation compatible with the production rate of glazing.
  • the glazing (5) is then correctly positioned (“focused”) in a mastering template (11), having a plurality of positioning stops, according to the isostatic design illustrated in FIG. 1, in Zl , Z2, Yl, Z2, Y3 and X4.
  • the point Y3 is preferably positioned on the line of the wiper seal (7) illustrating the position of this seal for contact with the door when the glazing is closed.
  • a matrix (12), illustrated in dotted lines, secured to the glazing reference frame (1) accommodates the shanks (5) of each glass holder (2). Movable lower (13) and upper (14) jaws then grip the tail (5), as can be seen more precisely in FIG. 4.
  • the movable jaws (13, 14) trap the glass holder (2) ( Figures 3, 4 and particularly 5) without damaging the static droop described above.
  • a deformation is then applied using the movable punch (15).
  • the arrows crossed with a zigzag illustrate the direction and the direction of the applied forces.
  • the glass holders used preferably have a flat tail which is formed in its entirety by the stamping operation, but it is also possible to use glass holders whose tail has a certain curvature, such as for example itre with pre-stamped second part (or tail).
  • a rib control is carried out on all the glazings before assembly, then the type of glass holder to be pre-assembled is chosen as a function of the values measured.
  • the implementation of this solution can be done, for example with the three types of glass holder illustrated in FIG. 7.
  • the glass holder (2) corresponds to the nominal solution
  • the glass holder (2 ') to the solution according to which one wishes to compensate - n'
  • the glass holder (2 ") to the solution according to which we want to compensate + n ", n 'and n" being numbers, for example both equal to 1 mm.
  • the glass holders (2', 2 ") are said to be” compensated "because their first parts are that is to say respectively the parallel walls (374 ', 3 "/ 4"), are offset respectively by -n' and + n "with respect to the axes (A ', A"), but the tail (5', 5 ") is oriented at the same non-zero angle with respect to the axis (A ', A") as the tail (5) of the nominal glass holder with respect to the axis A.
  • the bonding of the glass in the glass holder (2, 2 ', 2 ") is preferably carried out by gluing polypropylene-based inserts using a polyurethane-based adhesive between the parallel walls of the door -glass and glazing.
  • This variant is not however incompatible with the variant s according to which the inserts are produced by in situ injection.
  • the curve measurement is strictly greater than +/- 0.5 mm then compensation is made at +/- 1 mm. Assuming that a quadratic average is used to calculate the final tolerances, this is then approximately +/- 0.8 mm.
  • This solution requires designing a specific installation or adapting an existing installation for positioning the glass holders (2 ', 2 ") with compensation. As can be seen in FIG. 7, the total width of the glass holders ( 2, 2 ', 2 ") at the parallel walls is always the same, so as to facilitate the positioning of the glass holders in the mounting template and to respect the environment specific to the vehicle.
  • the longitudinal dimensions of the glass holders (2, 2 ', 2 ") are also identical. Only the thicknesses of the side walls of the U-shape change.
  • the assembly cycle time for a complete glazing unit is also slightly increased compared to previous solutions mainly because of the time required for the measurements, as well as for the choice of glass holders and the choice of the assembly reference system (nominal or compensated)
  • the matrixing of the glass holders used for the multi variant -supports is identical to the mastering operated for the basic version.
  • the present invention is described in the foregoing by way of example. It is understood that the person skilled in the art is able to readjust different variants of the invention without going beyond the scope of the patent as defined by the claims.

Abstract

The invention relates to a method for assembling a glazing (1), in particular a crowned glazing for a motor vehicle with an glass holder (2a, 2b), consisting in positioning said insert with respect to said glazing (1) and in fixing said insert thereto. Said invention is characterised in that the inventive insert is shaped by stamping.

Description

PROCEDE D'ASSEMBLAGE AVEC PRECISION D'UN ELEMENT RAPPORTE SUR UN VITRAGE La présente invention se rapporte à un procédé d'assemblage d'un vitrage, notamment d'un vitrage bombé pour véhicule automobile et d'au moins un élément rapporté du type porte-vitre, ledit procédé comportant une étape de positionnement dudit élément rapporté par rapport audit vitrage et une étape de fixation dudit élément rapporté audit vitrage. Elle se rapporte également à un vitrage obtenu par la mise en œuvre du procédé, un porte-vitre pour la mise en œuvre du procédé, un jeu de porte-vitres pour la mise en œuvre d'une variante particulière du procédé et une installation d'assemblage pour la mise en œuvre du procédé selon l'invention. II est connu dans l'art antérieur d'assembler un ou plusieurs porte-vitre sur des vitrages et de relier par ailleurs le ou les porte- vitre à un mécanisme d'entraînement afin de permettre de lever ou baisser une vitre à l'aide d'un automatisme. Il est par exemple connu de la demande de brevet français N° FR 2 807 054 une vitre munie d'un porte-vitre constitué d'un matériau de type résine choisi dans un groupe de résines particulières, ladite vitre comportant une couche d'adhésif uréthane contenant un agent de couplage au silane formée entre la vitre positionnée dans la rainure du porte-vitre et le porte- vitre. Selon ce document, avec un tel assemblage, la vitre du véhicule et le porte- vitre adhèrent rapidement et solidement au matériau d'étanchéité à l'uréthanne additionné d'agent de couplage au silane. π est ainsi possible de faire adhérer une vitre de véhicule et une porte-vitre solidement sans utiliser d'apprêt ni pour le verre, ni pour la résine. Un problème se pose toutefois lorsqu'une très grande précision sur le produit fini est requise après l'assemblage du porte-vitre au vitrage. En effet, lorsqu'un vitrage bombé, c'est-à-dire pas strictement plan, doit être monté dans un véhicule, pour que Fétanchéité au bruit et aux fluides soit assurée dans toutes les positions du vitrage une fois monté dans la porte du véhicule et plus particulièrement lorsque le vitrage est en position fermée, et ce même après des milliers de mouvements de monté et descente, les constructeurs automobiles souhaitent maintenant que l'assemblage du porte-vitre au vitrage présente une très grande précision. Cette précision est d'autant plus importante lorsque la porte dans laquelle est monté le vitrage ne comporte pas de montants supérieur et latéraux pour l'accueil du vitrage lors des manœuvres de montée et descente et en position fermée. Pour y parvenir, il est alors impératif de maîtriser tous les paramètres pouvant conduire à une perte de précision, à commencer par le procédé de bombage du vitrage. Toutefois, il est très difficile d'augmenter encore la précision de la phase de bombage surtout lorsque le vitrage est constitué de plusieurs feuilles de verre ou autre matière (vitrage feuilleté).The present invention relates to a method for assembling glazing, in particular curved glazing for a motor vehicle and at least one attached element of the door type. window, said method comprising a step of positioning said added element with respect to said glazing and a step of fixing said added element to said glazing. It also relates to a glazing obtained by the implementation of the process, a glass holder for the implementation of the process, a set of window holders for the implementation of a particular variant of the process and an installation of assembly for implementing the method according to the invention. It is known in the prior art to assemble one or more glass holders on glazing and to connect the glass holder (s) to a drive mechanism in order to allow the window to be raised or lowered using an automation. It is for example known from French patent application No. FR 2 807 054 a window provided with a window holder made of a resin type material chosen from a group of particular resins, said window comprising an adhesive layer urethane containing a silane coupling agent formed between the glass positioned in the groove of the glass holder and the glass holder. According to this document, with such an assembly, the vehicle window and the glass holder quickly and securely adhere to the urethane sealant added with silane coupling agent. π is thus possible to adhere a vehicle window and a window holder securely without using a primer either for glass or for resin. A problem arises, however, when very high precision on the finished product is required after assembling the glass holder to the glazing. Indeed, when a curved glazing, that is to say not strictly planar, must be mounted in a vehicle, so that the noise and fluid tightness is ensured in all positions of the glazing once mounted in the door of the vehicle and more particularly when the glazing is in the closed position, even after thousands of up and down movements, car manufacturers wish now that the assembly of the glass holder to the glazing is very precise. This precision is all the more important when the door in which the glazing is mounted does not have upper and lateral uprights for receiving the glazing during raising and lowering operations and in the closed position. To achieve this, it is therefore imperative to master all the parameters that can lead to a loss of precision, starting with the bending process of the glazing. However, it is very difficult to further increase the precision of the bending phase, especially when the glazing is made up of several sheets of glass or other material (laminated glazing).
Une autre solution consiste à concevoir un porte-vitre articulé permettant de corriger certains défauts lors du montage dans la portière. L'art antérieur connaît à ce titre la demande de brevet européen N° EP 1 178 175 qui porte sur un système de positionnement et d'assemblage d'une vitre très complexe comportant : - un élément adaptateur présentant une première extension dans le prolongement de la vitre et une seconde extension dans le sens longitudinal du vitrage ; - un élément curseur guidé dans au moins un rail solidaire d'une porte du véhicule et entraîné par un dispositif d'entraînement logé dans ladite porte ; ledit curseur étant muni d'une troisième extension dans le sens longitudinal de la vitre, d'au moins un bloc de guidage solidaire d'un élément du dispositif d'entraînement et guidé le long d'un rail, ainsi que d'une paroi verticale comportant une première surface de contact verticale susceptible de coopérer avec l'une des faces de la première extension de l'élément adaptateur dont la deuxième extension coopère avec la troisième extension du curseur de façon à permettre un faible mouvement relatif entre l'adaptateur et le curseur sous l'action d'une force longimdinale appliquée au vitrage avant sa fixation ; - un élément d'emprisonnement comprenant une surface de contact ; et - un moyen de fixation coopérant avec l'élément d'emprisonnement de feçon à bloquer la première extension de l'adaptateur entre lesdites premières et secondes surfaces de contact. Ainsi, lors du montage du vitrage dans la portière, le réglage du vitrage est autorisé dans le sens vertical du véhicule par le déplacement de l'adaptateur entre le curseur et l'élément d'emprisonnement et dans le sens longitudinal grâce à l'action de la troisième extension du curseur sur la seconde extension de l'adaptateur. Cette solution est fastidieuse à mettre en œuvre et engendre une perte de temps trop important pour le constructeur automobile qui cherche à ce que la voiture soit assemblée en un minium de temps.Another solution consists in designing an articulated glass holder making it possible to correct certain defects during assembly in the door. The prior art therefore knows European patent application No. EP 1 178 175 which relates to a system for positioning and assembling a very complex window comprising: - an adapter element having a first extension in the extension of the window and a second extension in the longitudinal direction of the window; - A slider element guided in at least one rail secured to a door of the vehicle and driven by a drive device housed in said door; said slider being provided with a third extension in the longitudinal direction of the glass, at least one guide block secured to an element of the drive device and guided along a rail, as well as a wall vertical comprising a first vertical contact surface capable of cooperating with one of the faces of the first extension of the adapter element, the second extension of which cooperates with the third extension of the slider so as to allow a slight relative movement between the adapter and the cursor under the action of a longitudinal force applied to the glazing before its fixing; - a confinement element comprising a contact surface; and - a fixing means cooperating with the trapping element of the feçon to block the first extension of the adapter between said first and second contact surfaces. Thus, when the glazing is mounted in the door, the glazing can be adjusted in the vertical direction of the vehicle by moving the adapter between the cursor and the locking element and in the longitudinal direction by the action of the third extension of the cursor on the second extension of the adapter. This solution is tedious to implement and generates a loss of time that is too great for the car manufacturer who seeks to have the car assembled in a minimum of time.
Il est également connu dans l'art antérieur de fixer le porte-vitre au vitrage à l'aide d'une vis ou d'un boulon poussant la vitre dans une position en butée à l'intérieur de la rainure du porte-vitre, mais cette méthode, si elle permet effectivement de réaliser un assemblage efficace pour des vitrages monolithiques, ne permet pas de réaliser un assemblage avec suffisamment de précision pour toutes les applications et surtout n'est pas applicable aux vitrages feuilletés car ces vitrages sont très f agilisés lorsqu'ils sont percés. Il est par ailleurs connu de la demande internationale de brevet N° WO 01/98613, différentes solutions d'assemblage vitrage/porte-vitre et porte- vitre/mécanisme d'entraînement. Ce document révèle en particulier la possibilité, lorsque le porte-vitre est solidaire fixement du vitrage, de réaliser un ajustement de la géométrie du porte-vitre par enlèvement de matière, afin d'adapter la position relative du porte-vitre par rapport au mécanisme d'entraînement (curseur mobile). Ce document révèle également la possibilité de rattraper les écarts de forme du vitrage par une modification du positionnement du porte-vitre par rapport au vitrage en utilisant un porte-vitre présentant un léger jeu dans la direction normale au vitrage. Le porte-vitre est ainsi fixé au vitrage à l'aide de deux colles, une colle lente et une colle rapide, après déplacement relatif de l'un par rapport à l'autre dans une position convenable. L'opération d'usinage du porte-vitre impose de réaliser un surplus de matière sur le porte- vitre puis d'enlever une partie de cette matière. L'enlèvement de la partie de matière engendre une perte de temps qui n'est pas facilement compatible avec les cadences de production des vitrages. En effet, un four moyen de bombage et/ou trempe permet de produire un vitrage tous les 20 à 30 secondes, voire moins, et cette cadence n'est pas compatible avec le temps nécessaire au positionnement du vitrage et au meulage. La seule solution consiste alors à multiplier les postes d'assemblage et de meulage et à organiser leur approvisionnement, mais cela engendre bien sûr un surcoût pour l'équipement nécessaire et augmente le risque de dispersion au sein de la production.It is also known in the prior art to fix the glass holder to the glazing by means of a screw or bolt pushing the glass into a stop position inside the groove of the glass holder, but this method, if it actually makes it possible to carry out an effective assembly for monolithic glazing, does not make it possible to carry out an assembly with sufficient precision for all the applications and above all is not applicable to laminated glazing because these glazing are very f when pierced. It is also known from international patent application No. WO 01/98613, different solutions for assembling glazing / glass holder and glass holder / drive mechanism. This document reveals in particular the possibility, when the glass holder is fixedly fixed to the glazing, to make an adjustment of the geometry of the glass holder by removing material, in order to adapt the relative position of the glass holder relative to the mechanism drive (moving cursor). This document also reveals the possibility of making up for deviations in the shape of the glazing by modifying the positioning of the glazing holder relative to the glazing by using a glazing holder having a slight clearance in the direction normal to the glazing. The glass holder is thus fixed to the glazing by means of two adhesives, a slow adhesive and a fast adhesive, after relative displacement of one relative to the other in a suitable position. The operation of machining the glass holder requires carrying out an excess of material on the glass holder and then removing part of this material. The removal of the material part generates a loss of time which is not easily compatible with the production rates of the glazing. Indeed, an average bending and / or quenching oven makes it possible to produce glazing every 20 to 30 seconds, or even less, and this rate is not compatible with the time necessary for positioning the glazing and for grinding. The only solution then is to increase the number of assembly and grinding stations and organize their supply, but this of course generates an additional cost. for the necessary equipment and increases the risk of dispersion within production.
Le but de l'invention est de pallier les inconvénients de l'art antérieur en proposant un procédé dans lequel l'assemblage du porte-vitre au vitrage est opéré rapidement, à des cadences compatibles avec celles de la production amont, sans avoir à multiplier le nombre de poste d'assemblage et tout en permettant de réaliser un assemblage très précis pour que l'ensemble ainsi assemblé présente la grande précision requise. D'une manière surprenante, il a été découvert par les inventeurs qu'une opération de matriçage, c'est-à-dire une opération de déformation plastique du porte- vitre entre deux empreintes appelées « matrices » positionnées très exactement par rapport au vitrage permettrait d'atteindre très vite la précision requise, sans pour autant entraîner un risque important de rupture du vitrage adjacent. La présente invention se rapporte ainsi dans son acception la plus large à un procédé d'assemblage d'un vitrage, notamment d'un vitrage bombé pour véhicule automobile et d'au moins un élément rapporté du type porte-vitre, ledit procédé comportant une étape de positionnement dudit élément rapporté par rapport audit vitrage et une étape de fixation dudit élément rapporté audit vitrage, ledit élément rapporté subissant une étape de façonnage par matriçage. Cette étape de façonnage par matriçage est, de préférence, opérée en prenant référence sur le vitrage. L'étape de façonnage par matriçage est en outre, de préférence, opérée postérieurement à ladite étape de fixation. Ledit élément rapporté présente de préférence au moins deux parties, une première partie coopérant avec ledit vitrage et une deuxième partie destinée à coopérer avec un système d'entraînement et le façonnage par matriçage n'est, de préférence, opéré que sur ladite seconde partie. Ledit élément rapporté est constitué, de préférence, d'un alliage à base d'aluminium. Les alliages ali iinium-magnésium-silicium de la série 6000 (Normes NF et EN) sont préférés car ils peuvent être élaborés sous forme de profilés de formes complexes. Es présentent par ailleurs une résistance mécanique moyenne (180 à 380 MPa) permettant leur mise en forme par matriçage. La nuance 6060 (Mg : 0,35% à 0,60% ; Si : 0,3% à 0,6%) très souvent utilisée en menuiserie métallique est notamment adéquat. Elle présente une limite d'élasticité d'environ 120 MPa. L'étape de fixation comporte, de préférence, l'insertion d'au moins un insert entre le vitrage et ledit élément rapporté. Dans une variante, l'insert est fabriqué par injection. L'insert est, de préférence, en résine thermofusible. Dans une variante du procédé (variante dite « multi-supports »), préalablement à l'étape de positionnement et à l'étape de fixation, la forme dudit ou desdits élément(s) rapporté(s) est choisie entre plusieurs formes possibles en fonction de côtes de tolérance mesurées sur le vitrage. De préférence, lorsque plusieurs éléments rapportés doivent être matrices sur un même vitrage, ils sont matrices simultanément.The object of the invention is to overcome the drawbacks of the prior art by proposing a process in which the assembly of the glass holder to the glazing is carried out quickly, at rates compatible with those of upstream production, without having to multiply the number of assembly stations and while making it possible to achieve very precise assembly so that the assembly thus assembled has the high precision required. Surprisingly, it has been discovered by the inventors that a die-forging operation, that is to say an operation of plastic deformation of the glass holder between two impressions called "dies" positioned very exactly with respect to the glazing would achieve the required accuracy very quickly, without causing a significant risk of breakage of the adjacent glazing. The present invention thus relates in its broadest sense to a method of assembling glazing, in particular curved glazing for a motor vehicle and at least one insert of the window-holder type, said method comprising a step of positioning said added element with respect to said glazing and a step of fixing said added element to said glazing, said added element undergoing a shaping step by stamping. This stamping shaping step is preferably carried out by taking reference to the glazing. The shaping step by stamping is also preferably carried out after said fixing step. Said insert preferably has at least two parts, a first part cooperating with said glazing and a second part intended to cooperate with a drive system and the shaping by stamping is preferably carried out only on said second part. Said insert preferably consists of an aluminum-based alloy. The ali iinium-magnesium-silicon alloys of the 6000 series (Standards NF and EN) are preferred because they can be produced in the form of profiles of complex shapes. They also have an average mechanical strength (180 to 380 MPa) allowing them to be shaped by stamping. Grade 6060 (Mg: 0.35% at 0.60%; If: 0.3% to 0.6%) very often used in metal joinery is particularly adequate. It has an elastic limit of around 120 MPa. The fixing step preferably includes the insertion of at least one insert between the glazing and said added element. In a variant, the insert is produced by injection. The insert is preferably made of hot-melt resin. In a variant of the method (so-called “multi-support” variant), prior to the positioning step and to the fixing step, the shape of said added element (s) is chosen from among several possible shapes in function of tolerance dimensions measured on the glazing. Preferably, when several added elements must be dies on the same glazing, they are dies simultaneously.
La présente invention se rapporte également à un vitrage, notamment un vitrage bombé pour véhicule automobile comportant au moins un élément rapporté du type porte-vitre, ledit vitrage étant obtenu par la mise en œuvre du procédé selon l'invention. Ce vitrage comporte, de préférence, au moins un insert, cet insert étant dans une variante en résine thermofasible et étant fabriqué de préférence dans cette variante par injection. L'élément rapporté formant le porte-vitre présente, de préférence, au moins deux parties, une première partie coopérant avec ledit vitrage et une deuxième partie destinée à coopérer avec un système d'entraînement, seule ladite seconde partie étant façonnée par matriçage. De préférence, ladite deuxième partie au moins de l'élément rapporté formant porte-vitre et de préférence encore tout l'élément rapporté, présente une limite d'élasticité d'au moins 50 MPa et de préférence encore d'au moins 100 MPa, pour permettre l'opération de matriçage. Afin d'éviter le retour de la pièce matricée dans sa forme initiale, l'effort appliqué lors du matriçage doit bien sûr être supérieur à la limite élastique du matériau employé. La présente invention se rapporte également à un porte-vitre présentant en coupe transversale sensiblement une forme en h constituée de deux parois parallèles et d'une queue feçonnée par matriçage pour la mise en œuvre du procédé selon l'invention. Ce porte-vitre est constitué, de préférence, d'un alliage à base d'aluminium. Bien que le porte-vitre selon l'invention ait d'abord été développé pour des vitrages ne supportant pas la réalisation de trous les traversant de part en part, du type vitrages feuilletés, il est tout à fait possible de fixer le porte-vitre selon l'invention à la vitre à l'aide d'un système du type boulon-écrou, le boulon coopérant avec un trou ménagé dans la vitre. En outre, des moyens, comme par exemple des bossages, peuvent être prévus au niveau des faces intérieures des deux parois parallèles dudit porte- vitre pour faciliter la coopération entre le porte-vitre et l'insert ou les inserts adjacent(s). La présente invention se rapporte également à un jeu de porte- vitres pour la mise en œuvre du procédé selon la variante dite « multi-supports », chaque porte-vitre du jeu présentant au moins deux parties, une première partie destinée à coopérer avec ledit vitrage et une deuxième partie destinée à coopérer avec un système d'entraînement et des porte-vitre du jeu présentant différents positionnement de leur première partie par rapport à leur deuxième partie. La présente invention se rapporte enfin à une installation d'assemblage d'un vitrage, notamment d'un vitrage bombé pour véhicule automobile et d'au moins un élément rapporté du type porte-vitre, pour la mise en œuvre du procédé selon l'invention, ladite installation comporte un poste de matriçage dudit ou desdits élément(s) rapporté(s). Ledit poste de matriçage comporte, de préférence, un gabarit pour le maintien dudit vitrage pendant l'opération de matriçage. Dans une autre variante l'installation comporte un poste d'injection d'un insert en résine thermofusible.The present invention also relates to glazing, in particular curved glazing for a motor vehicle comprising at least one insert of the window-holder type, said glazing being obtained by implementing the method according to the invention. This glazing preferably comprises at least one insert, this insert being in a variant made of thermofasible resin and preferably being produced in this variant by injection. The insert forming the glass holder preferably has at least two parts, a first part cooperating with said glazing and a second part intended to cooperate with a drive system, only said second part being shaped by stamping. Preferably, said at least second part of the added element forming a glass holder and more preferably the entire added element has an elastic limit of at least 50 MPa and more preferably at least 100 MPa, to allow the stamping operation. In order to avoid the return of the stamped part to its initial shape, the force applied during the stamping must of course be greater than the elastic limit of the material used. The present invention also relates to a glass holder having in cross section substantially an H shape consisting of two parallel walls and a shank formed by stamping for implementing the method according to the invention. This glass holder preferably consists of an aluminum-based alloy. Although the glass holder according to the invention was first developed for glazing which does not support the production of holes passing through it right through, of the laminated glazing type, it is entirely possible to fix the glass holder according to the invention to the window using a bolt-nut type system, the bolt cooperating with a hole in the window. In addition, means, such as for example bosses, may be provided at the interior faces of the two parallel walls of said glass holder to facilitate cooperation between the glass holder and the insert or the adjacent insert (s). The present invention also relates to a set of glass holders for implementing the method according to the so-called “multi-support” variant, each glass holder of the set having at least two parts, a first part intended to cooperate with said glazing and a second part intended to cooperate with a drive system and window-holders of the game having different positioning of their first part relative to their second part. The present invention finally relates to an installation for assembling a glazing, in particular a curved glazing for a motor vehicle and at least one added element of the window-holder type, for implementing the method according to the invention, said installation comprises a stamping station of said one or more added element (s). Said stamping station preferably includes a template for maintaining said glazing during the stamping operation. In another variant, the installation includes an injection station for an insert of hot-melt resin.
Avantageusement, la présente invention permet de fabriquer des vitrages équipés de porte-vitres présentant des tolérances de fabrication très faibles à l'aide d'une opération de formage extrêmement rapide s'intégrant très facilement dans le procédé de fabrication de vitrages bombés et/ou trempés. Avantageusement également, la présente invention peut être mise en œuvre avec tout type de vitrage, y compris les vitrages feuilletés. Avantageusement également, la présente invention a été développée pour les vitrages incorporés dans des portières ne présentant pas de montants latéraux ou supérieur au niveau du vitrage lorsque celui-ci est remonté, mais elle peut également être utilisée pour des vitrages incorporés dans des portières présentant des montants latéraux ou supérieur au niveau du vitrage lorsque celui-ci est remonté. Avantageusement enfin, avec la solution selon l'invention, il n'est pas strictement nécessaire d'opérer un contrôle de côtes du vitrage avant l'opération d'assemblage du ou des porte-vitre, sauf lorsque l'on met en œuvre la variante selon laquelle la forme de la première partie du porte-vitre dépend de côtes mesurées sur le vitrage.Advantageously, the present invention makes it possible to manufacture glazing units fitted with glass holders having very low manufacturing tolerances by means of an extremely rapid forming operation which is very easily integrated into the process for manufacturing curved glazing units and / or soaked. Advantageously also, the present invention can be implemented with any type of glazing, including laminated glazing. Advantageously also, the present invention has been developed for glazing incorporated in doors having no lateral or greater uprights at the level of the glazing when the latter is raised, but it can also be used for glazing incorporated in doors with lateral or higher uprights at the glazing level when the latter is reassembled. Advantageously, finally, with the solution according to the invention, it is not strictly necessary to operate a rib control of the glazing before the assembly operation of the glass holder (s), except when the variant according to which the shape of the first part of the glass holder depends on the dimensions measured on the glazing.
La présente invention sera mieux comprise à la lecture de la description détaillée ci-après d'exemples de réalisation non limitatifs et des figures ci-jointes : • La figure 1 illustre une vue de face d'un vitrage avant de véhicule muni de deux porte-vitre selon l'invention ; • La figure 2 illustre une vue en coupe d'un porte-vitre selon l'invention fixé à une vitre ; • La figure 3 illustre une vue de profil d'un vitrage avant de véhicule muni de deux porte-vitre selon l'invention subissant une opération de matriçage dans une installation de matriçage ; • La figure 4 illustre une vue de détail des mords de installation de matriçage de la figure 3 ; • La figure 5 illustre une vue de détail et de côté de la figure 3 ; • La figure 6 illustre une vue de détail du mors supérieur mobile ; et • La figure 7 illustre trois porte-vitre pour la mise en œuvre de la variante dite « multi-supports ». II est précisé que les proportions entre les divers éléments représentés dans les figures ne sont pas rigoureusement respectées afin d'en faciliter la lecture.The present invention will be better understood on reading the detailed description below of nonlimiting exemplary embodiments and of the attached figures: FIG. 1 illustrates a front view of a front glazing of a vehicle provided with two doors window according to the invention; • Figure 2 illustrates a sectional view of a glass holder according to the invention attached to a window; • Figure 3 illustrates a side view of a front window glazing vehicle with two glass holders according to the invention undergoing a stamping operation in a stamping installation; • Figure 4 illustrates a detailed view of the bits of the die-forging installation of Figure 3; • Figure 5 illustrates a detail and side view of Figure 3; • Figure 6 illustrates a detailed view of the movable upper jaw; and • Figure 7 illustrates three glass holders for the implementation of the so-called “multi-support” variant. It is specified that the proportions between the various elements shown in the figures are not strictly observed in order to facilitate reading.
La figure 1 illustre un vitrage (1), notamment un vitrage bombé pour véhicule automobile, muni de deux éléments rapportés sensiblement différents du type porte- vitre (2a, 2b) présentant en coupe transversale sensiblement une forme en h. La figure 2 illustre une vue de détail du porte- vitre (2b) de la figure 1. Ce porte-vitre (2) présente ainsi : - une première partie constituée de deux parois parallèles (3, 4) reliées à leur base et formant une rainure longimdinale, c'est-à-dire formant en coupe transversale une forme en U, et - une deuxième partie constituée d'une queue (5) s'étendant à l'opposée des parois parallèles (3, 4) par rapport à la base reliant ces parois. Dans la version illustrée, l'assemblage est opéré de manière à ce que lesdites parois parallèles (3, 4) de ladite forme en h enchâssent ladite vitre (1) dans sa partie inférieure, la queue (5) se trouvant alors sensiblement dans le prolongement du vitrage (1). Cette forme en h du porte- vitre est particulièrement avantageuse car elle permet la transmission des efforts entre le porte-vitre et le vitrage selon une grande surface correspondant à la somme des surfaces intérieures des parois parallèles (3, 4) ; toutefois, il est tout à possible d'utiliser une simple platine pour la mise en œuvre du procédé d'assemblage selon l'invention, cette platine présentant au moins deux parties : une première partie pour la coopération avec le vitrage et une deuxième partie pour la coopération avec le mécanisme d'entraînement. Sur la figure 2, le vitrage (1) est bombé et les parois parallèles (3, 4) et la queue (5) sont planes ; toutefois il est possible que les parois parallèles (3, 4) et /ou la queue (5) soient bombées. La queue (5) s'étend environ à partir de la moitié de la base reliant les parois parallèles (3, 4), mais il est également possible de positionner la queue (5) dans le prolongement de l'une ou de l'autre des parois parallèles (3, 4). Sur la figure 2 la queue (5) n'est pas parallèle aux parois (3, 4). L'axe A illustrant le plan moyen du vitrage (1) à son extrémité inférieure lorsque ce dernier est correctement positionné vis-à-vis du porte-vitre (2), la queue (5) est orientée d'un angle non nul vis-à-vis de l'axe A et qui est fonction du bombage du vitrage (1). La queue (5) est destinée à être reliée à un système d'entraînement motorisé non illustré pour permettre la montée et la descente du vitrage (1) dans la portière du véhicule. L'assemblage est opéré sur un gabarit permettant le contrôle des tolérances sur l'ensemble porte-vitre (2) / vitrage (1). Le (ou les) porte-vitre (2) est (ou sont) encollés(s) à l'aide d'une colle par exemple de polyuréthanne, puis « chaussé(s) » sur le vitrage (1), c'est-à-dire qu'il(s) est (ou sont) positionné(s) de manière à ce que le vitrage soit introduit dans la forme en U, en butée ou non, en insérant entre lesdites parois parallèles (3, 4) et ledit vitrage (1) des inserts (6) en matière plastique, comme par exemple dupolypropylène. Dans une variante, on propose de remplacer la phase de positionnement d'inserts (6) rapportés par une phase d'injection in-situ de matière adhésive destinée à former les inserts (6), en résine thermofusible thermoplastique, par exemple à base de polyamide. L'injection des inserts lorsque la vitre et le porte-vitre sont correctement positionnés l'un par rapport à l'autre garantit ainsi la position du porte-vitre au tout au moins de la première partie du porte-vitre, quel que soit le galbe du vitrage. La résine thermofusible utilisée présente une limite d'élasticité d'environ 5,5FIG. 1 illustrates a glazing (1), in particular a curved glazing for a motor vehicle, provided with two substantially different added elements of the window holder type (2a, 2b) having in cross section substantially a shape in h. FIG. 2 illustrates a detailed view of the glass holder (2b) of FIG. 1. This glass holder (2) thus has: - a first part consisting of two parallel walls (3, 4) connected to their base and forming a longitudinal groove, that is to say forming in cross section a U-shape, and - a second part consisting of a tail (5) extending opposite the parallel walls (3, 4) with respect to the base connecting these walls. In the illustrated version, the assembly is carried out in such a way that said parallel walls (3, 4) of said h-shape embed said window (1) in its lower part, the tail (5) then being substantially in the glazing extension (1). This h shape of the glass holder is particularly advantageous because it allows the transmission of forces between the glass holder and the glazing over a large area corresponding to the sum of the interior surfaces of the parallel walls (3, 4); however, it is quite possible to use a simple plate for implementing the assembly method according to the invention, this plate having at least two parts: a first part for cooperation with the glazing and a second part for cooperation with the drive mechanism. In Figure 2, the glazing (1) is curved and the parallel walls (3, 4) and the tail (5) are flat; however it is possible that the parallel walls (3, 4) and / or the tail (5) are curved. The tail (5) extends approximately from the half of the base connecting the parallel walls (3, 4), but it is also possible to position the tail (5) in the extension of one or the other parallel walls (3, 4). In Figure 2 the tail (5) is not parallel to the walls (3, 4). The axis A illustrating the mean plane of the glazing (1) at its lower end when the latter is correctly positioned with respect to the glass carrier (2), the tail (5) is oriented at a non-zero angle -with respect to axis A and which is a function of the bending of the glazing (1). The tail (5) is intended to be connected to a motorized drive system not shown to allow the glazing (1) to go up and down in the vehicle door. The assembly is carried out on a template allowing the control of tolerances on the glass holder (2) / glazing (1) assembly. The glass holder (s) (2) is (or are) glued (s) using an adhesive, for example polyurethane, then “shod (s)” on the glazing (1), this is that is, it is (are) positioned so that the glazing is introduced in the U-shape, in abutment or not, by inserting between said parallel walls (3, 4) and said glazing (1) inserts (6) made of plastic, such as for example polypropylene. In a variant, it is proposed to replace the positioning phase of inserts (6) added by an in situ injection phase of adhesive material intended to form the inserts (6), made of thermoplastic hot-melt resin, for example based on polyamide. The injection of the inserts when the glass and the glass holder are correctly positioned in relation to each other thus guarantees the position of the glass holder at least at the first part of the glass holder, whatever the curve of the glazing. The hot-melt resin used has an elastic limit of approximately 5.5
N/mm2 et une résistance à la rupture de 11 N/mm2, calculées selon la norme DIN 53455. Elle doit être utilisée à une température d'environ 220 °C et présente à cette température une viscosité de l'ordre de 5000 mPa.s, mesurée selon la norme ASTM D 3236. Lors de la mise en œuvre de cette solution, il est également possible d'utiliser une colle supplémentaire pour fixer parfaitement l'insert aux parois parallèles et à la vitre. Les inserts (6) rapportés ou fabriqués in-situ par injection servent ainsi à maintenir le vitrage (1) par rapport aux parois parallèles (3, 4) vis-à-vis des efforts latéraux. Selon l'invention, on propose d'opérer une déformation sous presse hydraulique des deuxièmes parties des éléments rapportés, c'est-à-dire des queues (5) des porte- vitre (2), après le pré-montage des porte-vitre sur la vitre et le positionnement ou la fabrication in-situ par injection des inserts (6). Cette opération de matriçage est opérée dans une installation d'assemblage (10) comme celle illustrée figure 3. Le matriçage des queues peut être opéré alors que le collage de la vitre n'est pas encore définitif ou après que la colle en polyuréthanne ait complètement durcie. Les porte-vitre utilisés sont, de préférence, en alliage d'aluminium. L'opération de matriçage engendre alors une déformation de la matière qui peut être décelée par analyse fine du porte- vitre car elle provoque la rupture partielle de la fibre. A titre d'exemple, avec un alliage d'aluminium de nuance 6060 (AGS), une force de pressage verticale de 30 à 50 tonnes est suffisante, c'est-à-dire rapporté à la taille des porte- vitre, des efforts d'environ 150 GPa pour des porte- vitre en h de dimension hors-tout d'environ 40x30 mm et d'environ 450 GPa pour des porte-vitre en h de dimension hors-tout d'environ 60x60 mm. D'autres matières peuvent être envisagées à condition qu'elles présentent une limite d'élasticité d'au moins 50 MPa et de préférence d'au moins 100 MPa. Cette solution de matriçage permet d'atteindre des tolérances finales de +/- 0,5 mm par rapport au référentiel du vitrage avec une rapidité d'opération compatible avec la cadence de production de vitrages. Après polymérisation de la colle, le vitrage (5) est ensuite correctement positionné (« focalisé ») dans un gabarit de matriçage (11), présentant une pluralité de butées de positionnement, suivant l'iso statisme illustré sur la figure 1, en Zl, Z2, Yl, Z2, Y3 et X4. Le point Y3 est, de préférence, positionné sur la ligne du joint lécheur (7) illustrant la position de ce joint de contact avec la portière lorsque le vitrage est fermé. Une matrice (12), illustrée en pointillés, solidaire du référentiel du vitrage (1) accueille les queux (5) de chaque porte-vitre (2). Des mors mobiles inférieur (13) et supérieur (14) viennent ensuite enserrer la queue (5), comme on peut le voir plus précisément sur la figure 4. Quelle que soit l'orientation du porte-vitre (2) dans la direction Y les mords mobiles (13, 14) viennent emprisonner le porte-vitre (2) (figures 3, 4 et particulièrement 5) sans détériorer l'iso statisme décrit ci-dessus. Une déformation est ensuite appliquée grâce au poinçon mobile (15). Sur les figures 3 à 5, les flèches barrées d'un zigzag illustrent la direction et le sens des efforts appliqués. Les porte-vitre utilisés présentent de préférence une queue plane qui est formée dans sa totalité par l'opération de matriçage, mais il est également possible d'utiliser des porte-vitre dont la queue présente une certaine courbure, comme par exemple des porte- itre à deuxième partie (ou queue) pré-matricée. Dans une variante de l'invention, appelée variante « multi-supports », on réalise un contrôle des côtes sur tous les vitrages avant l'assemblage, puis on choisit le type de porte-vitre à pré-monter en fonction des valeurs mesurées. La mise en œuvre de cette solution peut se faire, par exemple avec les trois types de porte-vitre illustrés figure 7. Sur cette figure, le porte-vitre (2) correspond à la solution nominale, le porte- vitre (2') à la solution selon laquelle on souhaite compenser - n' et le porte-vitre (2") à la solution selon laquelle on souhaite compenser + n", n' et n" étant des nombres, par exemple tous les deux égaux à 1 mm. Les porte- vitre (2', 2") sont dit « à compensation » car leurs premières parties, c'est-à-dire respectivement les parois parallèles (374', 3"/4"), sont décalées respectivement de -n' et + n" par rapport aux axes (A', A"), mais la queue (5', 5") est orientée du même angle non nul vis-à-vis de l'axe (A', A") que la queue (5) du porte- vitre nominal vis-à-vis de l'axe A. Ensuite, le collage de la vitre dans le porte-vitre (2, 2', 2") est opéré, de préférence, en collant des inserts à base de polypropylène à l'aide d'une colle à base polyuréthanne entre les parois parallèles du porte-vitre et le vitrage. Cette variante n'est toutefois pas incompatible avec la variante selon laquelle les inserts sont fabriqués par injection in-situ. Ainsi, par exemple, si la mesure de galbe est strictement supérieure à +/-0,5 mm alors on opère une compensation à +/-1 mm. En prenant l'hypothèse de réaliser une moyenne quadratique pour calculer les tolérances finales, celle-ci est alors d'environ +/- 0,8 mm. Cette solution nécessite de concevoir une installation particulière ou d'adapter une installation existante pour le positionnement des porte- vitre (2', 2") à compensation. Comme on peut le constater sur la figure 7, la largeur totale des porte-vitre (2, 2', 2") au niveau des parois parallèles est toujours la même, de manière à faciliter le positionnement des porte-vitre dans le gabarit de montage et à respecter l'environnement propre au véhicule. Les dimensions longitudinales des porte-vitre (2, 2', 2") sont également identiques. Seules les épaisseurs des parois latérales de la forme en U changent. Le temps de cycle d'assemblage d'un vitrage complet est en outre légèrement augmenté par rapport aux solutions antérieures en raison essentiellement du temps nécessaire pour les mesures, ainsi que pour le choix des porte-vitres et du choix du référentiel d'assemblage (nominal ou à compensation). Le matriçage des porte-vitre utilisés pour la variante multi-supports est identique au matriçage opéré pour la version de base. La présente invention est décrite dans ce qui précède à titre d'exemple. Il est entendu que l'homme du métier est à même de réahser différentes variantes de l'invention sans pour autant sortir du cadre du brevet tel que défini par les revendications. N / mm 2 and a breaking strength of 11 N / mm 2 , calculated according to DIN 53455. It must be used at a temperature of around 220 ° C and has a viscosity of about 5000 at this temperature. mPa.s, measured according to standard ASTM D 3236. When implementing this solution, it is also possible to use an additional adhesive to perfectly fix the insert to the parallel walls and to the glass. The inserts (6) added or manufactured in-situ by injection thus serve to maintain the glazing (1) relative to the parallel walls (3, 4) with respect to the lateral forces. According to the invention, it is proposed to operate a deformation in a hydraulic press of the second parts of the added elements, that is to say the tails (5) of the glass holders (2), after the pre-assembly of the holders. glass on the glass and in-situ positioning or manufacturing by injection of the inserts (6). This stamping operation is carried out in an assembly installation (10) like that illustrated in FIG. 3. The stamping of the tails can be carried out while the gluing of the glass is not yet final or after the polyurethane adhesive has completely hardened. The glass holders used are preferably made of aluminum alloy. The forging operation then generates a deformation of the material which can be detected by fine analysis of the glass holder because it causes the partial breaking of the fiber. For example, with an aluminum alloy of grade 6060 (AGS), a vertical pressing force of 30 to 50 tonnes is sufficient, i.e. related to the size of the glass holders, forces about 150 GPa for window holders in hours from overall dimension of approximately 40x30 mm and approximately 450 GPa for glass holders in h of overall dimension of approximately 60x60 mm. Other materials can be considered provided that they have an elastic limit of at least 50 MPa and preferably at least 100 MPa. This stamping solution allows reaching final tolerances of +/- 0.5 mm with respect to the glazing reference frame with a speed of operation compatible with the production rate of glazing. After polymerization of the adhesive, the glazing (5) is then correctly positioned (“focused”) in a mastering template (11), having a plurality of positioning stops, according to the isostatic design illustrated in FIG. 1, in Zl , Z2, Yl, Z2, Y3 and X4. The point Y3 is preferably positioned on the line of the wiper seal (7) illustrating the position of this seal for contact with the door when the glazing is closed. A matrix (12), illustrated in dotted lines, secured to the glazing reference frame (1) accommodates the shanks (5) of each glass holder (2). Movable lower (13) and upper (14) jaws then grip the tail (5), as can be seen more precisely in FIG. 4. Whatever the orientation of the glass holder (2) in the direction Y the movable jaws (13, 14) trap the glass holder (2) (Figures 3, 4 and particularly 5) without damaging the static droop described above. A deformation is then applied using the movable punch (15). In FIGS. 3 to 5, the arrows crossed with a zigzag illustrate the direction and the direction of the applied forces. The glass holders used preferably have a flat tail which is formed in its entirety by the stamping operation, but it is also possible to use glass holders whose tail has a certain curvature, such as for example itre with pre-stamped second part (or tail). In a variant of the invention, called a “multi-support” variant, a rib control is carried out on all the glazings before assembly, then the type of glass holder to be pre-assembled is chosen as a function of the values measured. The implementation of this solution can be done, for example with the three types of glass holder illustrated in FIG. 7. In this figure, the glass holder (2) corresponds to the nominal solution, the glass holder (2 ') to the solution according to which one wishes to compensate - n' and the glass holder (2 ") to the solution according to which we want to compensate + n ", n 'and n" being numbers, for example both equal to 1 mm. The glass holders (2', 2 ") are said to be" compensated "because their first parts are that is to say respectively the parallel walls (374 ', 3 "/ 4"), are offset respectively by -n' and + n "with respect to the axes (A ', A"), but the tail (5', 5 ") is oriented at the same non-zero angle with respect to the axis (A ', A") as the tail (5) of the nominal glass holder with respect to the axis A. Then, the bonding of the glass in the glass holder (2, 2 ', 2 ") is preferably carried out by gluing polypropylene-based inserts using a polyurethane-based adhesive between the parallel walls of the door -glass and glazing. This variant is not however incompatible with the variant s according to which the inserts are produced by in situ injection. Thus, for example, if the curve measurement is strictly greater than +/- 0.5 mm then compensation is made at +/- 1 mm. Assuming that a quadratic average is used to calculate the final tolerances, this is then approximately +/- 0.8 mm. This solution requires designing a specific installation or adapting an existing installation for positioning the glass holders (2 ', 2 ") with compensation. As can be seen in FIG. 7, the total width of the glass holders ( 2, 2 ', 2 ") at the parallel walls is always the same, so as to facilitate the positioning of the glass holders in the mounting template and to respect the environment specific to the vehicle. The longitudinal dimensions of the glass holders (2, 2 ', 2 ") are also identical. Only the thicknesses of the side walls of the U-shape change. The assembly cycle time for a complete glazing unit is also slightly increased compared to previous solutions mainly because of the time required for the measurements, as well as for the choice of glass holders and the choice of the assembly reference system (nominal or compensated) The matrixing of the glass holders used for the multi variant -supports is identical to the mastering operated for the basic version. The present invention is described in the foregoing by way of example. It is understood that the person skilled in the art is able to readjust different variants of the invention without going beyond the scope of the patent as defined by the claims.

Claims

REVENDICATIONS
1. Procédé d'assemblage d'un vitrage (1), notamment d'un vitrage bombé pour véhicule automobile et d'au moins un élément rapporté du type porte-vitre (2, 2a, 2b, 2', 2"), ledit procédé comportant une étape dé positionnement dudit élément rapporté par rapport audit vitrage (1) et une étape de fixation dudit élément rapporté audit vitrage, caractérisé en ce que ledit élément rapporté subi une étape de façonnage par matriçage. 1. Method for assembling a glazing (1), in particular a curved glazing for a motor vehicle and at least one added element of the window-holder type (2, 2a, 2b, 2 ′, 2 "), said method comprising a step of positioning said added element relative to said glazing (1) and a step of fixing said added element to said glazing, characterized in that said added element undergoes a shaping step by stamping.
2. Procédé selon la revendication 1, caractérisé en ce que l'étape de façonnage par matriçage est opérée en prenant référence sur le vitrage. 2. Method according to claim 1, characterized in that the shaping step by stamping is carried out by taking reference to the glazing.
3. Procédé selon la revendication 1 ou la revendication 2, caractérisé en ce que l'étape de façonnage par matriçage est opérée postérieurement à ladite étape de fixation. 3. Method according to claim 1 or claim 2, characterized in that the shaping step by stamping is carried out after said fixing step.
4. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit élément rapporté présente au moins deux parties, une première partie coopérant avec ledit vitrage (1) et une deuxième partie destinée à coopérer avec un système d'entraînement, le façonnage par matriçage n'étant opéré que sur ladite seconde partie. 4. Method according to any one of the preceding claims, characterized in that said added element has at least two parts, a first part cooperating with said glazing (1) and a second part intended to cooperate with a drive system, the shaping by stamping being carried out only on said second part.
5. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit élément rapporté est constitué d'un alliage à base d'aluminium. 5. Method according to any one of the preceding claims, characterized in that said added element consists of an aluminum-based alloy.
6. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'étape de fixation comporte l'insertion d'au moins un insert (6) entre le vitrage (1) et ledit élément rapporté. 6. Method according to any one of the preceding claims, characterized in that the fixing step comprises the insertion of at least one insert (6) between the glazing (1) and said insert.
7. Procédé selon la revendication précédente caractérisé en ce que l'insert (6) est fabriqué par injection. 7. Method according to the preceding claim characterized in that the insert (6) is manufactured by injection.
8. Procédé selon la revendication 6 ou la revendication 7, caractérisé en ce que l'insert (6) est en résine thermofusible. 8. Method according to claim 6 or claim 7, characterized in that the insert (6) is made of hot-melt resin.
9. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que, préalablement à l'étape de positionnement et à l'étape de fixation, la forme dudit ou desdits élément(s) rapporté(s) est choisie entre plusieurs formes possibles en fonction de côtes de tolérance mesurées sur le vitrage (1). 9. Method according to any one of the preceding claims, characterized in that, prior to the positioning step and to the fixing step, the shape of said added element (s) is chosen from several forms possible depending on the tolerance dimensions measured on the glazing (1).
10. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que lesdits éléments rapportés sont matrices simultanément. 10. Method according to any one of the preceding claims, characterized in that said added elements are matrices simultaneously.
11. Vitrage (1), notamment vitrage bombé pour véhicule automobile comportant au moins un élément rapporté du type porte-vitre (2, 2a, 2b, 2', 2"), ledit vitrage étant obtenu par la mise en œuvre du procédé selon l'une quelconque des revendications précédentes. 11. Glazing (1), in particular curved glazing for a motor vehicle comprising at least one added element of the glass-holder type (2, 2a, 2b, 2 ', 2 "), said glazing being obtained by implementing the method according to any of the preceding claims.
12. Vitrage (1) selon la revendication précédente, caractérisé en ce qu'il comporte au moins un insert (6). 12. Glazing (1) according to the preceding claim, characterized in that it comprises at least one insert (6).
13. Vitrage (1) selon la revendication précédente, caractérisé en ce que ledit insert (6) est en résine thermofusible. 13. Glazing (1) according to the preceding claim, characterized in that said insert (6) is made of hot-melt resin.
14. Vitrage (1) selon l'une quelconque des revendications 11 à 13, caractérisé en ce que ledit élément rapporté présente au moins deux parties, une première partie coopérant avec ledit vitrage (1) et une deuxième partie destinée à coopérer avec un système d'entraînement, seule ladite seconde partie étant façonnée par matriçage. 14. Glazing (1) according to any one of claims 11 to 13, characterized in that said added element has at least two parts, a first part cooperating with said glazing (1) and a second part intended to cooperate with a system drive, only said second part being shaped by stamping.
15. Vitrage (1) selon l'une quelconque des revendications 11 à 14, caractérisé en ce que ladite deuxième partie au moins, et de préférence tout l'élément rapporté, présente une limite d'élasticité d'au moins 50 MPa et de préférence d'au moins 100 MPa. 15. Glazing (1) according to any one of claims 11 to 14, characterized in that said second part at least, and preferably the entire added element, has an elastic limit of at least 50 MPa and preferably at least 100 MPa.
16. Porte-vitre (2, 2a, 2b, 2', 2") présentant en coupe transversale sensiblement une forme en h constituée de deux parois parallèles (3, 4) et d'une queue (5) façonnée par matriçage pour la mise en œuvre du procédé selon l'une quelconque des revendications 1 à 10. 16. Glass holder (2, 2a, 2b, 2 ', 2 ") having a substantially h-shaped cross-section consisting of two parallel walls (3, 4) and a tail (5) shaped by stamping for the implementation of the method according to any one of claims 1 to 10.
17. Porte-vitre (2, 2a, 2b, 2', 2") selon la revendication précédente, caractérisé en ce qu'il est constitué d'un alliage à base d'aluminium. 17. Glass holder (2, 2a, 2b, 2 ', 2 ") according to the preceding claim, characterized in that it consists of an aluminum-based alloy.
18. Jeu de porte-vitres (2, 2', 2") pour la mise en œuvre du procédé selon la revendication 9, caractérisé en ce que chaque porte-vitre du jeu présente au moins deux parties, une première partie destinée à coopérer avec ledit vitrage (1) et une deuxième partie destinée à coopérer avec un système d'entraînement et en ce que des porte-vitre du jeu présentent différents positionnement de leur première partie par rapport à leur deuxième partie. 18. Set of window holders (2, 2 ', 2 ") for implementing the method according to claim 9, characterized in that each window holder of the set has at least two parts, a first part intended to cooperate with said glazing (1) and a second part intended to cooperate with a drive system and in that window holders of the game have different positioning of their first part relative to their second part.
19. Installation (10) d'assemblage d'un vitrage (1), notamment d'un vitrage bombé pour véhicule automobile et d'au moins un élément rapporté du type porte vitre (2, 2a, 2b, 2', 2") pour la mise en œuvre du procédé selon l'une quelconque des revendications 1 à 10, caractérisée en ce qu'elle comporte un poste de matriçage dudit ou desdits élément(s) rapporté(s). 19. Installation (10) for assembling a glazing (1), in particular a curved glazing for a motor vehicle and at least one added element of the glass door type (2, 2a, 2b, 2 ', 2 " ) for the implementation of the method according to any one of claims 1 to 10, characterized in that it comprises a stamping station of said one or more insert element (s).
20. Installation (10) selon la revendication précédente, caractérisée en ce que ledit poste de matriçage comporte un gabarit (11) pour le maintien dudit vitrage (1). 20. Installation (10) according to the preceding claim, characterized in that said stamping station comprises a template (11) for maintaining said glazing (1).
21. Installation (10) selon la revendication 19 ou la revendication 20, caractérisée en ce qu'elle comporte un poste d'injection d'un insert (6) en résine thermofusible. 21. Installation (10) according to claim 19 or claim 20, characterized in that it comprises an injection station for an insert (6) made of hot-melt resin.
EP05739370A 2004-03-30 2005-03-21 Method for accurately mounting an insert on a glazing Withdrawn EP1745190A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0403255A FR2868386B1 (en) 2004-03-30 2004-03-30 METHOD OF ACCURATELY ASSEMBLING AN ELEMENT REPORTED ON A GLAZING
PCT/FR2005/050178 WO2005098187A1 (en) 2004-03-30 2005-03-21 Method for accurately mounting an insert on a glazing

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EP1745190A1 true EP1745190A1 (en) 2007-01-24

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FR (1) FR2868386B1 (en)
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WO2019115078A1 (en) 2017-12-12 2019-06-20 Saint-Gobain Glass France Retaining element for a vehicle side window that can be raised and lowered
WO2019115080A1 (en) 2017-12-12 2019-06-20 Saint-Gobain Glass France Vehicle side window having a retaining element attached on one side
WO2019115079A1 (en) 2017-12-12 2019-06-20 Saint-Gobain Glass France Retaining element for a vehicle side window that can be raised and lowered

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WO2019115078A1 (en) 2017-12-12 2019-06-20 Saint-Gobain Glass France Retaining element for a vehicle side window that can be raised and lowered
WO2019115080A1 (en) 2017-12-12 2019-06-20 Saint-Gobain Glass France Vehicle side window having a retaining element attached on one side
WO2019115079A1 (en) 2017-12-12 2019-06-20 Saint-Gobain Glass France Retaining element for a vehicle side window that can be raised and lowered
US11261641B2 (en) 2017-12-12 2022-03-01 Saint-Gobain Glass France Retaining element for a vehicle side window that can be raised and lowered
US11274485B2 (en) 2017-12-12 2022-03-15 Saint-Gobain Glass France Retaining element for a vehicle side window that can be raised and lowered
US11952819B2 (en) 2017-12-12 2024-04-09 Saint-Gobain Glass France Vehicle side window having a retaining element attached on one side

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