EP0669494A1 - 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
- EP0669494A1 EP0669494A1 EP95400403A EP95400403A EP0669494A1 EP 0669494 A1 EP0669494 A1 EP 0669494A1 EP 95400403 A EP95400403 A EP 95400403A EP 95400403 A EP95400403 A EP 95400403A EP 0669494 A1 EP0669494 A1 EP 0669494A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- glass
- sub
- attachment means
- plane
- face
- 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.
- These mutual attachment means generally comprise a male part on the edge of one of the sub-assemblies and a female part on the adjacent edge of the other sub-assembly.
- the present invention aims to overcome these drawbacks of the state of the art.
- a vehicle lighting or signaling device which consists of at least two molded sub-assemblies, one on the other and comprising, on their adjacent edges, mutual attachment means which extend substantially along the plane of the glass, these attachment means comprising a male part on one of the subassemblies and a part complementary female on the other sub-assembly, characterized in that the attachment means are provided in generally rectilinear zones of said adjacent edges and in that zones of strong curvature of said edges are devoid of such attachment means.
- the invention also provides a lighting or signaling device for a vehicle, characterized in that it comprises a window as defined above.
- FIG. 1 shows a window 1 which comprises two parts or sub-assemblies 2 and 3 molded one on top of the other.
- Figure 2 is a vertical sectional view of a 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.
- 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 two subassemblies 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, c ' that is to say 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 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 flat 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 reversed with respect to the embodiment of FIG. 4.
- FIG. 5 represents, partially and in section, a mold necessary for the production of the sub-assembly 5, 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 there is no problem associated with the area P1 of docking of the joint plane, since it is not necessary to coincide so very precise both parts of the mold.
- the simplification of the geometry of the attachment means in this second embodiment 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 stop lights.
- the latter are devoid of attachment means in certain angles, and preferably in the region of all sharp angles.
- the glass is sealed in these corner regions by the straight profile contact faces of the edges of the subassemblies, and this sealing is satisfactory.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Joining Of Glass To Other Materials (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (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.
Ces moyens d'accrochage mutuel comprennent généralement une partie mâle sur le bord de l'un des sous-ensembles et une partie femelle sur le bord adjacent de l'autre sous-ensemble.These mutual attachment means generally comprise a male part on the edge of one of the sub-assemblies and a female part on the adjacent edge of the other sub-assembly.
Une telle glace connue présente toutefois un certain nombre d'inconvénients.Such known ice, however, has a number of drawbacks.
Tout d'abord, la conception des moules pour réaliser la glace, du fait de la présence des parties mâles et femelles d'accrochage dans des régions d'angles des sous-ensembles, est extrêmement longue et fastidieuse. Notamment, lors du recours aux techniques de numérisation pour élaborer les moules, les temps de calcul sont excessivement longs et l'usinage des moules est complexe.First of all, the design of the molds for making the ice, due to the presence of the male and female attachment parts in the angle regions of the sub-assemblies, is extremely long and tedious. In particular, when using digitization techniques to develop the molds, the calculation times are excessively long and the machining of the molds is complex.
De plus, on a observé que la présence de ces parties mâles et femelles dans ces régions d'angles provoque des défauts d'aspect de la glace, notamment lorsque le sous-ensemble comportant la partie d'accrochage femelle est plus clair que le sous-ensemble adjacent, ou d'une teinte différente.In addition, it has been observed that the presence of these male and female parts in these corner regions causes defects in the appearance of the ice, in particular when the subassembly comprising the female attachment part is lighter than the sub -adjacent set, or of a different shade.
On a observé enfin que des problèmes d'étanchéité de la glace étaient rencontrés dans ces régions d'angle, du fait de plans de contact défectueux.Finally, it was observed that problems of sealing the glass were encountered in these corner regions, due to defective contact planes.
La présente invention vise à pallier ces inconvénients de l'état de la technique.The present invention aims to overcome these drawbacks of the state of the art.
Elle propose à cet effet une glace pour un dispositif d'éclairage ou de signalisation de véhicule, 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, ces moyens d'accrochage comprenant une partie mâle sur l'un des sous-ensembles et une partie femelle complémentaire sur l'autre sous-ensemble, caractérisée en ce que les moyens d'accrochage sont prévus dans des zones généralement rectilignes desdits bords adjacents et en ce que des zones de forte courbure desdits bords sont dépourvus de tels moyens d'accrochage.To this end, it offers a window for a vehicle lighting or signaling device, which consists of at least two molded sub-assemblies, one on the other and comprising, on their adjacent edges, mutual attachment means which extend substantially along the plane of the glass, these attachment means comprising a male part on one of the subassemblies and a part complementary female on the other sub-assembly, characterized in that the attachment means are provided in generally rectilinear zones of said adjacent edges and in that zones of strong curvature of said edges are devoid of such attachment means.
Des aspects préférés, mais non limitatifs, de la glace telle que définie ci-dessus sont les suivants :
- des zones d'angles desdits bords sont dépourvus de moyens d'accrochage ;
- la partie mâle des moyens d'accrochage présente, 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 essentiellement droite selon une direction sensiblement perpendiculaire ;
- ladite face curviligne présente un profil en forme générale d'arc de cercle.
- corner zones of said edges are devoid of attachment means;
- the male part of the hooking means has, in cross section, a face that is essentially straight and parallel to the plane of the glass and a curvilinear face which extends from said edge in a direction substantially parallel to the plane of ice to reach said essentially straight face in a substantially perpendicular direction;
- said curvilinear face has a profile in the general shape of an arc of a circle.
L'invention propose également un dispositif d'éclairage ou de signalisation pour véhicule, caractérisé en ce qu'il comprend une glace telle que définie ci-dessus.The invention also provides a lighting or signaling device for a vehicle, characterized in that it comprises a window as defined above.
D'autres caractéristiques et avantages de la présente invention apparaîtront à la lecture de la description qui va suivre de certains modes de réalisation préférentiels. Cette description sera faite en référence aux dessins annexés dans lesquels :
- la figure 1 est une vue en coupe d'une glace conforme à l'invention, formée de deux sous-ensembles ;
- la figure 2 est une vue en coupe verticale et partielle de la glace de la figure 1, dans une région où elle comporte des moyens d'accrochage ;
- la figure 3 est une vue en coupe verticale et partielle d'un moule utilisé pour le moulage du sous-ensemble de la glace de la figure 2 qui comporte une partie mâle d'accrochage ;
- la figure 4 est une vue en coupe verticale et partielle d'une seconde glace conforme à l'invention, dans une région où elle comporte des moyens d'accrochage ;
- la figure 5 est une vue en coupe verticale et partielle d'un moule utilisé pour le moulage du sous-ensemble de la glace de la figure 4 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 le plan VI-VI de la figure7 ;
- 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 1 is a sectional view of a glass according to the invention, formed of two sub-assemblies;
- Figure 2 is a vertical and partial sectional view of the glass of Figure 1, in a region where it comprises attachment means;
- Figure 3 is a vertical and partial sectional view of a mold used for molding the subassembly of the ice of Figure 2 which has a male attachment portion;
- Figure 4 is a vertical and partial sectional view of a second glass according to the invention, in a region where it comprises attachment means;
- Figure 5 is a vertical and partial sectional view of a mold used for molding the subassembly of the ice of Figure 4 having a male attachment portion;
- 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.
On a représenté à la figure 1 une glace 1 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 d'une 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 a region where these two sub-assemblies are provided with attachment means. The
Sur leurs bords 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
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.The reference P designates the joint plane, that is to say the junction between the two
En référence maintenant à 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.Referring now to 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 bords respectifs 51 et 61 des sous-ensembles, sensiblement dans le plan de la glace.The attachment means mentioned above extend over the
La partie mâle 54 comporte, vue selon la coupe de la figure 4, une face 540 sensiblement plane et parallèle au plan de la glace.The
Elle comporte également une face courbe 541 qui part du bord 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
La figure 5 représente, partiellement et en coupe, un moule nécessaire à la réalisation du sous-ensemble 5, dont les deux parties ont été désignées 7 et 7'.FIG. 5 represents, partially and in section, a mold necessary for the production of the
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 pas de problème lié à la zone P1 d'accostage du plan de joint, puisqu'il n'est pas 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 dans cette deuxième réalisation 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 in this second embodiment 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
En référence à la figure 8, et selon un aspect essentiel de l'invention, quelle que soit la forme adoptée pour les parties mâles et femelles des sous-ensembles, ces derniers sont dépourvus de moyens d'accrochage dans certains angles, et de préférence dans la région de tous les angles vifs.With reference to FIG. 8, and according to an essential aspect of the invention, whatever the shape adopted for the male and female parts of the subassemblies, the latter are devoid of attachment means in certain angles, and preferably in the region of all sharp angles.
L'étanchéité de la glace est assurée dans ces régions d'angle par les faces de contact à profil droit des bords des sous-ensembles, et cette étanchéité s'avère satisfaisante.The glass is sealed in these corner regions by the straight profile contact faces of the edges of the subassemblies, and this sealing is satisfactory.
En outre, l'absence de moyens d'accrochage dans ces régions d'angle permet d'éviter des anomalies optiques, au profit de l'homogénéité de l'aspect général de la glace.In addition, the absence of attachment means in these corner regions makes it possible to avoid optical anomalies, in favor of the homogeneity of the general appearance of the ice.
Enfin et surtout, la conception et l'usinage des moules sont grandement facilités, du fait que ces régions d'angle n'ont pas été traitées.Last but not least, the design and machining of the molds is greatly facilitated, since these corner regions have not been treated.
Claims (5)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9402248 | 1994-02-28 | ||
| FR9402248A FR2716708B1 (en) | 1994-02-28 | 1994-02-28 | Glass for vehicle lighting or signaling device and device thus equipped. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0669494A1 true EP0669494A1 (en) | 1995-08-30 |
| EP0669494B1 EP0669494B1 (en) | 1999-04-07 |
Family
ID=9460481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95400403A Expired - Lifetime EP0669494B1 (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) | EP0669494B1 (en) |
| DE (1) | DE69508828T2 (en) |
| ES (1) | ES2130546T3 (en) |
| FR (1) | FR2716708B1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| JPH03165402A (en) * | 1989-11-22 | 1991-07-17 | Ichikoh Ind Ltd | Forming of lens for vehicle light |
-
1994
- 1994-02-28 FR FR9402248A patent/FR2716708B1/en not_active Expired - Lifetime
-
1995
- 1995-02-27 DE DE69508828T patent/DE69508828T2/en not_active Expired - Lifetime
- 1995-02-27 ES ES95400403T patent/ES2130546T3/en not_active Expired - Lifetime
- 1995-02-27 EP EP95400403A patent/EP0669494B1/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| JPH03165402A (en) * | 1989-11-22 | 1991-07-17 | Ichikoh Ind Ltd | Forming of lens for vehicle light |
Non-Patent Citations (2)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 15, no. 105 (M - 1092) 13 March 1991 (1991-03-13) * |
| PATENT ABSTRACTS OF JAPAN vol. 15, no. 400 (M - 1167) 11 October 1991 (1991-10-11) * |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2130546T3 (en) | 1999-07-01 |
| DE69508828D1 (en) | 1999-05-12 |
| EP0669494B1 (en) | 1999-04-07 |
| FR2716708A1 (en) | 1995-09-01 |
| FR2716708B1 (en) | 1996-05-10 |
| DE69508828T2 (en) | 1999-08-19 |
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