EP0669495A1 - Lens member for lighting or signaling device for vehicle and assembly so equipped - Google Patents
Lens member for lighting or signaling device for vehicle and assembly so equipped Download PDFInfo
- Publication number
- EP0669495A1 EP0669495A1 EP95400405A EP95400405A EP0669495A1 EP 0669495 A1 EP0669495 A1 EP 0669495A1 EP 95400405 A EP95400405 A EP 95400405A EP 95400405 A EP95400405 A EP 95400405A EP 0669495 A1 EP0669495 A1 EP 0669495A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- glass
- face
- plane
- attachment means
- lens
- 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.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/50—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
- F21S43/51—Attachment thereof
Definitions
- the present invention relates to a window for a vehicle lighting or signaling device.
- the same lens can cover the brake, reversing and change of direction boxes and for this purpose includes subsets of respective red, colorless and amber colors.
- One technique for making this type of ice cream is to use an injection molding machine that allows parts of different colors to be molded simultaneously.
- Another technique consists in first molding a sub-assembly of the ice, then placing it in the mold of the second sub-assembly.
- FIG. 1 shows a window 1 of this type, which comprises two parts or sub-assemblies 2 and 3 overmolded one on the other.
- Figure 2 is a vertical sectional view of the region where these two sub-assemblies are provided with attachment means.
- the references 20 and 30 respectively designate their external faces (intended to be turned towards the outside) while the references 22 and 32 designate their internal faces.
- the two parts of glass comprise, at the level of a peripheral shoulder 23, respectively 33, a tenon 24 and a complementary mortise 34, the tenon having a dovetail shape.
- the dovetail shape generates complex areas, difficult and expensive to scan and then machine in the manufacturing mold of the corresponding part.
- FIG. 3 are shown partially in section, the two parts of molds 4 and 4 ′ necessary for the manufacture of the periphery of the subassembly 2.
- the reference P designates the joint plane, that is to say the junction between the two parts 4 and 4 ′ of the mold.
- the area P1 called "docking of the joint plane” is difficult to obtain without generating visible appearance defects on the glass finally obtained.
- dovetail attachment means are difficult to machine in the corner areas of the glass.
- the present invention aims to overcome these drawbacks.
- an objective of the invention is to provide a lens formed from overmolded subassemblies whose mutual attachment means are of a simpler form than the dovetail and, therefore, to facilitate the design and the manufacture of the corresponding mold.
- Glass for a vehicle lighting or signaling device which consists of at least two sub-assemblies overmolded on each other and comprising, on their adjacent edges, means for mutual attachment which extend substantially along the plane of the glass, is remarkable in that these attachment means comprise a male part having, in cross section, a face that is essentially straight and parallel to the plane of the glass and a curvilinear face which s extends from said edge in a direction substantially parallel to the plane of the glass to join said face in a direction substantially perpendicular, and a female part of complementary shape.
- the invention also relates to a vehicle lighting or signaling device equipped with a window conforming to one or other of the characteristics described above.
- the two sub-assemblies 5 and 6 forming the glass of the invention comprise mutual attachment means 54 and 64.
- the respective external faces have been designated by the references 50 and 60, that is ie those intended to be turned outwards when the glass is in place on a lighting or signaling device.
- References 52 and 62 correspond to their internal faces.
- the attachment means mentioned above extend over the respective edges or edges 51 and 61 of the subassemblies, substantially in the plane of the glass.
- the male part 54 comprises, seen along the section of FIG. 4, a face 540 which is substantially straight and parallel to the plane of the glass.
- It also has a curved face 541 which starts from the edge 51 in a direction substantially parallel to the plane of the glass to join the face 540 substantially perpendicular thereto.
- the face 541 has a shape complementary to that of the part 64.
- the face 540 could be arranged on the side of the external face of the ice sub-assemblies 5 and 6 so that the male part 54 would be inverted with respect to the embodiment of FIG. 4.
- FIG. 5 represents, partially and in section, such a mold, the two parts of which have been designated 7 and 7 ′.
- junction plane P of the two parts 7 and 7 ′ coincides with that of the face 540 of the male member. Therefore, the part 7 simply rests on the part 7 'and we no longer encounter the problem linked to the area P1 of docking of the joint plane, since it is no longer necessary to coincide so very precise both parts of the mold.
- the simplification of the geometry of the attachment means makes it possible to reduce the design times, in particular the time necessary for the digitization of the part and makes it possible to simplify the mold. This simplification is even more important if the glass is strongly arched and is molded in a mold which uses one or more moving parts, such as, for example, a cam.
- Figures 6 and 7 a glass according to the invention, comprising three sub-assemblies 5, 6, 7.
- the sub-assembly 7 is for example molded first.
- the sub-assembly 6 constitutes the first overmolding, while the sub-assembly 5 constitutes the second.
- the colors of these subsets 5, 6 and 7 are, for example, respectively crystal, amber and red, corresponding to the reversing lights, flashing and brake lights.
- the sub-assemblies are devoid of attachment means in certain angles.
- the tightness of the glass is guaranteed by the contact surface of the sub-assemblies, the total thickness of the glass being unchanged.
- attachment means Mechanical resistance is ensured by the faces fitted with attachment means.
- the absence of attachment means is not visible in the case where the subassembly carrying the female part in a darker color than that which carries the male part.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
Description
La présente invention concerne une glace pour un dispositif d'éclairage ou de signalisation de véhicule.The present invention relates to a window for a vehicle lighting or signaling device.
Elle concerne également un dispositif ainsi équipé.It also relates to a device thus equipped.
Il est courant d'équiper les dispositifs de signalisation arrière de véhicules d'une glace comportant des zones de couleurs différentes. Ainsi, une même glace peut recouvrir les boîtiers des feux stop, de recul et de changement de direction et comporte à cet effet des sous-ensembles de couleurs respectives rouge, incolore et ambrée.It is common to equip the rear signaling devices of vehicles with a window having zones of different colors. Thus, the same lens can cover the brake, reversing and change of direction boxes and for this purpose includes subsets of respective red, colorless and amber colors.
Une technique de fabrication de ce type de glace consiste à utiliser une machine de moulage par injection permettant de mouler simultanément des pièces de couleurs différentes.One technique for making this type of ice cream is to use an injection molding machine that allows parts of different colors to be molded simultaneously.
Une autre technique consiste à mouler dans un premier temps un sous-ensemble de la glace, puis à disposer celui-ci dans le moule du second sous-ensemble.Another technique consists in first molding a sub-assembly of the ice, then placing it in the mold of the second sub-assembly.
Pour ce faire, il est nécessaire de prévoir sur les chants ou bords des différentes parties de la glace des moyens d'accrochage mutuel.To do this, it is necessary to provide on the edges or edges of the different parts of the glass mutual fastening means.
On a représenté à la figure 1 une glace 1 de ce type, qui comprend deux parties ou sous-ensembles 2 et 3 surmoulées l'une sur l'autre.FIG. 1 shows a
La figure 2 est une vue en coupe verticale de la région où ces deux sous-ensembles sont pourvus de moyens d'accrochage. Les références 20 et 30 désignent respectivement leurs faces externes (destinées à être tournées vers l'extérieur) tandis que les références 22 et 32 désignent leurs faces internes.Figure 2 is a vertical sectional view of the region where these two sub-assemblies are provided with attachment means. The
Sur leurs chants 21, respectivement 31, les deux parties de glace comportent, au niveau d'un épaulement périphérique 23, respectivement 33, un tenon 24 et une mortaise complémentaire 34, le tenon ayant une forme en queue d'aronde.On their edges 21, respectively 31, the two parts of glass comprise, at the level of a
Si cette technique donne satisfaction pour ce qui est de l'accrochage des deux sous-ensembles l'un sur l'autre, elle présente néanmoins certains inconvénients.If this technique is satisfactory with regard to the attachment of the two sub-assemblies to one another, it nevertheless has certain drawbacks.
En effet, la forme en queue d'aronde génère des zones complexes, difficiles et coûteuses à numériser puis à usiner dans le moule de fabrication de la pièce correspondante.Indeed, the dovetail shape generates complex areas, difficult and expensive to scan and then machine in the manufacturing mold of the corresponding part.
A la figure 3 sont représentées partiellement en coupe, les deux parties de moules 4 et 4' nécessaires à la fabrication de la périphérie du sous-ensemble 2.In FIG. 3 are shown partially in section, the two parts of
La référence P désigne le plan de joint, c'est-à-dire de jonction entre les deux parties 4 et 4' du moule. En particulier, la zone P1 dite "accostage du plan de joint" est difficile à obtenir sans générer des défauts d'aspect visibles sur la glace obtenue finalement.The reference P designates the joint plane, that is to say the junction between the two
Par ailleurs, ces moyens d'accrochage en queue d'aronde sont difficiles à usiner dans les zones d'angle de la glace.Furthermore, these dovetail attachment means are difficult to machine in the corner areas of the glass.
La présente invention vise à pallier ces inconvénients.The present invention aims to overcome these drawbacks.
Ainsi, un objectif de l'invention est de fournir une glace formée de sous-ensembles surmoulés dont les moyens d'accrochage mutuels sont d'une forme plus simple que la queue d'aronde et, de ce fait, de faciliter la conception et la fabrication du moule correspondant.Thus, an objective of the invention is to provide a lens formed from overmolded subassemblies whose mutual attachment means are of a simpler form than the dovetail and, therefore, to facilitate the design and the manufacture of the corresponding mold.
La glace pour un dispositif d'éclairage ou de signalisation de véhicule conforme à l'invention, qui consiste en au moins deux sous-ensembles surmoulés l'un sur l'autre et comportant, sur leurs bords adjacents des moyens d'accrochage mutuel qui s'étendent sensiblement selon le plan de la glace, est remarquable par le fait que ces moyens d'accrochage comprennent une partie mâle présentant, en coupe transversale, une face essentiellement droite et parallèle au plan de la glace et une face curviligne qui s'étend à partir dudit bord selon une direction sensiblement parallèle au plan de la glace pour rejoindre ladite face selon une direction sensiblement perpendiculaire, et une partie femelle de forme complémentaire.Glass for a vehicle lighting or signaling device according to the invention, which consists of at least two sub-assemblies overmolded on each other and comprising, on their adjacent edges, means for mutual attachment which extend substantially along the plane of the glass, is remarkable in that these attachment means comprise a male part having, in cross section, a face that is essentially straight and parallel to the plane of the glass and a curvilinear face which s extends from said edge in a direction substantially parallel to the plane of the glass to join said face in a direction substantially perpendicular, and a female part of complementary shape.
Selon d'autres caractéristiques avantageuses mais non limitatives :
- la face s'étend du côté externe de ladite glace ;
- la face s'étend du côté interne de ladite glace ;
- la face curviligne forme sensiblement un arc de cercle ;
- au moins une partie d'angle desdits sous-ensembles est dépourvue de moyens d'accrochage.
- the face extends from the external side of said glass;
- the face extends from the internal side of said glass;
- the curvilinear face substantially forms an arc of a circle;
- at least a corner part of said subassemblies is devoid of attachment means.
L'invention concerne également un dispositif d'éclairage ou de signalisation de véhicule équipé d'une glace conforme à l'une ou l'autre des caractéristiques décrites plus haut.The invention also relates to a vehicle lighting or signaling device equipped with a window conforming to one or other of the characteristics described above.
D'autres caractéristiques et avantages de la présente invention apparaîtront à la lecture de la description qui va suivre d'un mode de réalisation préférentiel. Cette description sera faite en référence aux dessins annexés dans lesquels :
- la figure 4 est une vue en coupe verticale et partielle d'une glace conforme à l'invention, dans la région où elle comporte des moyens d'accrochage ;
- la figure 5 est également une vue en coupe verticale et partielle d'un moule utilisé pour le moulage du sous-ensemble de glace comportant une partie mâle d'accrochage ;
- les figures 6 et 7 sont des vues, respectivement en coupe et de face, d'une glace conforme à l'invention, la coupe de la figure 6 étant réalisée selon la plan VI-VI de la figure 7 ;
- la figure 8 est une vue schématique et de face d'une glace dans laquelle les sous-ensembles qui la forment sont dépourvus de moyens d'accrochage dans les angles.
- Figure 4 is a vertical and partial sectional view of a glass according to the invention, in the region where it comprises attachment means;
- Figure 5 is also a vertical and partial sectional view of a mold used for molding the ice sub-assembly comprising a male hooking part;
- Figures 6 and 7 are views, respectively in section and from the front, of a glass according to the invention, the section of Figure 6 being made along the plane VI-VI of Figure 7;
- Figure 8 is a schematic front view of a glass in which the sub-assemblies which form it are devoid of attachment means in the corners.
Comme le montre la figure 4, les deux sous-ensembles 5 et 6 formant la glace de l'invention comportent des moyens d'accrochage mutuels 54 et 64. On a désigné par les références 50 et 60 leurs faces externes respectives, c'est-à-dire celles destinées à être tournées vers l'extérieur lorsque la glace est en place sur un dispositif d'éclairage ou de signalisation. Les références 52 et 62 correspondent à leurs faces internes.As shown in FIG. 4, the two
Leur partie périphérique est formée d'un épaulement 53, respectivement 63, constituant une surépaisseur de matière dirigée du côté interne de la glace.Their peripheral part is formed by a
Les moyens d'accrochage mentionnés plus haut s'étendent sur les chants ou bords respectifs 51 et 61 des sous-ensembles, sensiblement dans le plan de la glace.The attachment means mentioned above extend over the respective edges or
La partie mâle 54 comporte, vue selon la coupe de la figure 4, une face 540 sensiblement droite et parallèle au plan de la glace.The
Elle comporte également une face courbe 541 qui part du chant 51 selon une direction sensiblement parallèle au plan de la glace pour rejoindre la face 540 sensiblement perpendiculairement à celle-ci.It also has a
Dans le mode de réalisation présenté, la face 541 a une forme complémentaire de celle de la partie 64.In the embodiment presented, the
Dans un autre mode de réalisation, la face 540 pourrait être disposée du côté de la face externe des sous-ensembles de glace 5 et 6 de sorte que la partie mâle 54 serait renversée par rapport à la réalisation de la figure 4.In another embodiment, the
On notera la simplicité de la forme de ces moyens d'accrochage par rapport à ceux déjà connus en queue d'aronde.Note the simplicity of the shape of these attachment means compared to those already known at the dovetail.
Ceci se répercute également favorablement sur le moule nécessaire pour la réalisation de la partie mâle.This also has a positive effect on the mold necessary for the production of the male part.
La figure 5 représente, partiellement et en coupe, un tel moule, dont les deux parties ont été désignées 7 et 7'.FIG. 5 represents, partially and in section, such a mold, the two parts of which have been designated 7 and 7 ′.
On notera que le plan de jonction P des deux parties 7 et 7' coïncide avec celui de la face 540 de l'organe mâle. De ce fait, la partie 7 prend simplement appui sur la partie 7' et l'on ne rencontre plus le problème lié à la zone P1 d'accostage du plan de joint, puisqu'il n'est plus nécessaire de faire coïncider de manière très précise les deux parties de moule.It will be noted that the junction plane P of the two
La simplification de la géométrie des moyens d'accrochage permet de réduire les temps de conception, notamment le temps nécessaire à la numérisation de la pièce et permet de simplifier le moule. Cette simplification est encore plus importante si la glace est fortement cambrée et est moulée dans un moule qui utilise une ou plusieurs pièces mobiles, telle que, par exemple, une came.The simplification of the geometry of the attachment means makes it possible to reduce the design times, in particular the time necessary for the digitization of the part and makes it possible to simplify the mold. This simplification is even more important if the glass is strongly arched and is molded in a mold which uses one or more moving parts, such as, for example, a cam.
Aux figures 6 et 7 est représentée une glace conforme à l'invention, comportant trois sous-ensembles 5, 6, 7. Le sous-ensemble 7 est par exemple moulé en premier. Le sous-ensemble 6 constitue le premier surmoulage, tandis que le sous-ensemble 5 constitue le second.In Figures 6 and 7 is shown a glass according to the invention, comprising three
Les couleurs de ces sous-ensembles 5, 6 et 7 sont, par exemple, respectivement cristal, ambrée et rouge, correspondant aux feux de recul, clignotant et feux stop.The colors of these
Dans l'exemple de réalisation de la figure 8, les sous-ensembles sont dépourvus de moyens d'accrochage dans certains angles.In the embodiment of Figure 8, the sub-assemblies are devoid of attachment means in certain angles.
L'étanchéité de la glace est garantie par la surface de contact des sous-ensembles, I'épaisseur totale de la glace n'étant pas modifiée.The tightness of the glass is guaranteed by the contact surface of the sub-assemblies, the total thickness of the glass being unchanged.
La tenue mécanique est assurée par les faces équipées des moyens d'accrochage. L'absence de moyens d'accrochage n'est pas visible dans le cas où le sous-ensemble portant la partie femelle à une couleur plus sombre que celui qui porte la partie mâle.Mechanical resistance is ensured by the faces fitted with attachment means. The absence of attachment means is not visible in the case where the subassembly carrying the female part in a darker color than that which carries the male part.
Claims (6)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9402250A FR2716709B1 (en) | 1994-02-28 | 1994-02-28 | Glass for vehicle lighting or signaling device and device thus equipped. |
| FR9402250 | 1994-02-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0669495A1 true EP0669495A1 (en) | 1995-08-30 |
| EP0669495B1 EP0669495B1 (en) | 1999-04-07 |
Family
ID=9460483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95400405A Expired - Lifetime EP0669495B1 (en) | 1994-02-28 | 1995-02-27 | Lens member for lighting or signaling device for vehicle and assembly so equipped |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0669495B1 (en) |
| DE (1) | DE69508829T2 (en) |
| ES (1) | ES2130547T3 (en) |
| FR (1) | FR2716709B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3145964A1 (en) * | 2023-02-17 | 2024-08-23 | Psa Automobiles Sa | Exterior cover glass for automobile headlight unit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2083293A5 (en) * | 1970-05-16 | 1971-12-10 | Rau Swf Autozubehoer | |
| FR2380864A1 (en) * | 1977-02-18 | 1978-09-15 | Vega Auto Products Ltd | PROCESS FOR MAKING A COMPOSITE DIFFUSER GLASS FOR AN ELECTRIC LAMP SUCH AS A MOTOR VEHICLE LIGHT |
| JPH031919A (en) * | 1989-05-30 | 1991-01-08 | Ichikoh Ind Ltd | Method for molding lens of lamp for vehicle |
-
1994
- 1994-02-28 FR FR9402250A patent/FR2716709B1/en not_active Expired - Lifetime
-
1995
- 1995-02-27 EP EP95400405A patent/EP0669495B1/en not_active Expired - Lifetime
- 1995-02-27 ES ES95400405T patent/ES2130547T3/en not_active Expired - Lifetime
- 1995-02-27 DE DE69508829T patent/DE69508829T2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2083293A5 (en) * | 1970-05-16 | 1971-12-10 | Rau Swf Autozubehoer | |
| FR2380864A1 (en) * | 1977-02-18 | 1978-09-15 | Vega Auto Products Ltd | PROCESS FOR MAKING A COMPOSITE DIFFUSER GLASS FOR AN ELECTRIC LAMP SUCH AS A MOTOR VEHICLE LIGHT |
| JPH031919A (en) * | 1989-05-30 | 1991-01-08 | Ichikoh Ind Ltd | Method for molding lens of lamp for vehicle |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 15, no. 105 (M - 1092) 13 March 1991 (1991-03-13) * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2716709B1 (en) | 1996-05-10 |
| ES2130547T3 (en) | 1999-07-01 |
| DE69508829D1 (en) | 1999-05-12 |
| EP0669495B1 (en) | 1999-04-07 |
| DE69508829T2 (en) | 1999-08-19 |
| FR2716709A1 (en) | 1995-09-01 |
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