FR2486471A1 - Hydraulic tube for headlight dipper control - has metal foil vapour barrier to inhibit vapour escape and pressure loss - Google Patents
Hydraulic tube for headlight dipper control - has metal foil vapour barrier to inhibit vapour escape and pressure loss Download PDFInfo
- Publication number
- FR2486471A1 FR2486471A1 FR8109869A FR8109869A FR2486471A1 FR 2486471 A1 FR2486471 A1 FR 2486471A1 FR 8109869 A FR8109869 A FR 8109869A FR 8109869 A FR8109869 A FR 8109869A FR 2486471 A1 FR2486471 A1 FR 2486471A1
- Authority
- FR
- France
- Prior art keywords
- metal foil
- vapour
- regulator
- tube
- sheet
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
- B60Q1/064—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle by fluid means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
Description
Etat de la techniaue
L'invention part d'un régulateur hydromécanique de la portée d'éclairement pour des phares de véhicules automobiles, avec des canalisations flexibles dans les liaisons hydrauliques. Dans ces dernières on utiliseSla plupart du temps, un mélange d'eau et d'éthylène - glycol, Les canalisations réalisées en matière thermoplastique ne sont toutefois pas complètement imperméables vis à vis des gaz et des vapeurs. C'est ainsi que du fait du processus appelé"perméation'1, l'eau, compte tenu de sa pression de vapeur, peut migrer de l'intérieur de la canalisation à travers la parois ce qui à la longue aboutit à des pertes du liquide hydraulique contenu dans le circuit.Bien que ces pertes de fluide sous pression soient relativement très réduites, elles influencent défavorablement le réglage des phares et nécessitent, même si ce n'est qu'à des intervalles de temps très importants, un ajustement de ces phares.State of the technique
The invention starts from a hydromechanical regulator of the lighting range for headlights of motor vehicles, with flexible pipes in the hydraulic connections. In the latter, most of the time, a mixture of water and ethylene - glycol is used. The pipes made of thermoplastic material are not, however, completely impermeable to gases and vapors. Thus, due to the process called "permeation'1, water, given its vapor pressure, can migrate from the interior of the pipeline through the walls which in the long term results in losses of hydraulic fluid contained in the circuit. Although these losses of fluid under pressure are relatively very small, they adversely affect the adjustment of the headlights and require, even if only at very long time intervals, an adjustment of these lighthouses.
Avantages de l'invention
Le régulateur de portée d'éclairement conforme à l'invention avec les caractéristiques de la revendication principale, présente par rapport au stand de la technique qui a été exposé, l'avantage que la perméation des eanalivations flexibles est réduite à un minimum, qui, en pratique, n'a plus dtimportan- ce. Le barrage pour la vapeur que constitue la feuille de métal entourant hermétiquement le tube souple, empoche pratiquement la perméation.Advantages of the invention
The lighting range regulator according to the invention with the characteristics of the main claim, compared to the stand of the technique which has been exposed, the advantage that the permeation of flexible connections is reduced to a minimum, which, in practice, no longer matters. The barrier for steam constituted by the metal sheet hermetically surrounding the flexible tube, practically pockets the permeation.
Les dispositions exposées dans les sous-revendications rendent possibles d'autres formes avantageuses et des améliorations du régulateur de portée d'éclairement indiqué dans la revendication principale. The arrangements set out in the subclaims make possible other advantageous forms and improvements to the lighting range regulator indicated in the main claim.
Dessins
Un exemple de réalisation de l'invention est représenté sur les dessins et expliqué plue en détail dans la description qui va suivre.Drawings
An exemplary embodiment of the invention is shown in the drawings and explained in greater detail in the description which follows.
- la figure 1 montre en représentation schémati- que un régulateur hydremécanique de portée d'éclairement susceptible d'être actionné manuellement pour des phares de véhicules automobiles;
- la figure 2 montre la coupe transversate d'une canalisation flexible à une échelle fortement agrandie.- Figure 1 shows in diagrammatic representation a hydremechanical regulator of lighting range capable of being actuated manually for headlights of motor vehicles;
- Figure 2 shows the cross section of a flexible pipe on a greatly enlarged scale.
Description de l'exemple de réalisation
Sur la figure 1, un régulateur hydromécanique de portée d'éclairement susceptible d'être actions manuellement, est constitué pour l'essentiel d'un émetteur 10 fixé sur le tableau de bord 11, d'un premier et d'un second éléments de réglage 12, fixés sur une partie fixe du phare 13, et de deux canalisations flexibles 14. Celles-ci relient l'émetteur 10 avec les deux éléments de réglage 12 et constituent avec chacun d'eux une liaison hydraulique.Un premier et un second réflecteurs 16 sont, d'une part, articulés à une autre partie du phare 13 et d'autre part, reliés avec la tige de piston 15 de l'élément de réglage 12,
La canalisation 14 sur la~figure 2 est prévue en tant que canalisation dite de liaison et a la constitution suivante t un tube souple 17 en matière thermoplastique, de préfé- rence en polyéthylène, reçoit à son intérieur le fluide sous pression, lequel est la plupart du temps un mélange d'éthylène avec du glycol et de l'eau. Sur l'enveloppe externe du tube souple 17 est de préférence étroitement appliquée une feuille de métal 19 fermée sur elle;n8me et qui constitue un barrage contre la vapeur pour l'intérieur 18 du tube souple. La feuille de métal 19 est en aluminium ou bien en un alliage d'aluminium, et présente -wn recouvrement à son emplacement de jonction 20, cette zone de recouvrement étant collée En variante, l'emplacement de jonction de la feuille métallique peut également être soudé, notamment être soudé en bout.Description of the exemplary embodiment
In FIG. 1, a hydromechanical regulator with a lighting range capable of being operated manually, essentially consists of a transmitter 10 fixed to the dashboard 11, first and second elements of adjustment 12, fixed on a fixed part of the headlight 13, and of two flexible pipes 14. These connect the transmitter 10 with the two adjustment elements 12 and constitute with each of them a hydraulic connection. A first and a second reflectors 16 are, on the one hand, articulated to another part of the headlight 13 and, on the other hand, connected with the piston rod 15 of the adjustment element 12,
The pipe 14 in ~ Figure 2 is provided as a so-called connecting pipe and has the following constitution t a flexible tube 17 of thermoplastic material, preferably polyethylene, receives inside it the pressurized fluid, which is the mostly a mixture of ethylene with glycol and water. On the external envelope of the flexible tube 17 is preferably closely applied a metal sheet 19 closed on it; n8me and which constitutes a barrier against the vapor for the interior 18 of the flexible tube. The metal sheet 19 is made of aluminum or an aluminum alloy, and has a covering at its junction location 20, this covering area being glued. As a variant, the junction location of the metal sheet can also be welded, including being butt welded.
Une gaine 21 également en lzne matière thermoplass tique, par exemple du polyéthylène, entoure la feuille de métal 19 et constitue essentiellement la protection mécanique de cette feuille. A sheath 21 also in lzne thermoplastic material, for example polyethylene, surrounds the metal sheet 19 and essentially constitutes the mechanical protection of this sheet.
Le recouvrement est d'au moins 2 millimètres. The overlap is at least 2 millimeters.
Claims (5)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19803025729 DE3025729A1 (en) | 1980-07-08 | 1980-07-08 | HYDROMECHANICAL HEADLAMP CONTROL FOR MOTOR VEHICLE HEADLIGHTS |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2486471A1 true FR2486471A1 (en) | 1982-01-15 |
FR2486471B1 FR2486471B1 (en) | 1985-06-21 |
Family
ID=6106607
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8109869A Expired FR2486471B1 (en) | 1980-07-08 | 1981-05-18 | HYDROMECHANICAL LIGHTING RANGE REGULATOR FOR MOTOR VEHICLE HEADLIGHTS |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE3025729A1 (en) |
FR (1) | FR2486471B1 (en) |
IT (1) | IT1189021B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0230457A1 (en) * | 1985-07-10 | 1987-08-05 | Merit Plastics Inc | Composite fuel and vapor tube. |
FR2600746A1 (en) * | 1986-06-25 | 1987-12-31 | Choukroun Georgette | RELATIVELY SOFT MULTISTRATE TUBE SEALED WITH WATER STEAM |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2050015A5 (en) * | 1969-06-07 | 1971-03-26 | Kabel Metallwerke Ghh |
-
1980
- 1980-07-08 DE DE19803025729 patent/DE3025729A1/en not_active Withdrawn
-
1981
- 1981-05-18 FR FR8109869A patent/FR2486471B1/en not_active Expired
- 1981-07-02 IT IT22703/81A patent/IT1189021B/en active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2050015A5 (en) * | 1969-06-07 | 1971-03-26 | Kabel Metallwerke Ghh |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0230457A1 (en) * | 1985-07-10 | 1987-08-05 | Merit Plastics Inc | Composite fuel and vapor tube. |
EP0230457A4 (en) * | 1985-07-10 | 1987-11-02 | Merit Plastics Inc | Composite fuel and vapor tube. |
FR2600746A1 (en) * | 1986-06-25 | 1987-12-31 | Choukroun Georgette | RELATIVELY SOFT MULTISTRATE TUBE SEALED WITH WATER STEAM |
EP0251856A1 (en) * | 1986-06-25 | 1988-01-07 | Georgette Choukroun née Blutel | Gas-tight and especially water vapour-tight relatively flexible multilayer tube |
Also Published As
Publication number | Publication date |
---|---|
IT1189021B (en) | 1988-01-28 |
FR2486471B1 (en) | 1985-06-21 |
IT8122703A0 (en) | 1981-07-02 |
DE3025729A1 (en) | 1982-02-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |