FR2965034A1 - Hydraulic device for hydrostatic transmission system of e.g. car, has hydraulic components assembled in parallel between inlet and outlet of body, while authorizing passage of oil, such that flowrates of components are increased across body - Google Patents
Hydraulic device for hydrostatic transmission system of e.g. car, has hydraulic components assembled in parallel between inlet and outlet of body, while authorizing passage of oil, such that flowrates of components are increased across body Download PDFInfo
- Publication number
- FR2965034A1 FR2965034A1 FR1057415A FR1057415A FR2965034A1 FR 2965034 A1 FR2965034 A1 FR 2965034A1 FR 1057415 A FR1057415 A FR 1057415A FR 1057415 A FR1057415 A FR 1057415A FR 2965034 A1 FR2965034 A1 FR 2965034A1
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- France
- Prior art keywords
- hydraulic
- components
- oil
- outlet
- inlet
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/027—Check valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
- F15B13/08—Assemblies of units, each for the control of a single servomotor only
- F15B13/0803—Modular units
- F15B13/0832—Modular valves
- F15B13/0842—Monoblock type valves, e.g. with multiple valve spools in a common housing
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Details Of Gearings (AREA)
- Control Of Transmission Device (AREA)
Abstract
Description
"DISPOSITIF HYDRAULIQUE POUR SYSTEME DE TRANSMISSION DE VEHICULE" "HYDRAULIC DEVICE FOR VEHICLE TRANSMISSION SYSTEM"
La présente invention est relative à un dispositif hydraulique pour système de transmission de véhicule. Plus particulièrement, l'invention concerne un tel dispositif pour une application dans une transmission hydrostatique de véhicule automobile. Dans une telle application, le plus courant est d'utiliser des composants hydrauliques standards tels que des composants hydrauliques miniatures dédiés à l'automobile. Ces composants sont économiques car ils sont produits en grande série. Ces composants connus sont par exemple des clapets anti-retour, des vannes, des filtres, des composants assurant une restriction de passage de fluide. Un problème est que ces composants, certes fiables, sont en général limités en débit. Classiquement, on met en série de tels composants et, pour augmenter le débit pouvant passer dans le dispositif, on augmente la section de passage, donc la taille du composant et l'encombrement du dispositif. Ce problème est d'autant plus crucial que l'augmentation de performances n'est pas constante avec l'encombrement. Un autre problème de cette augmentation de la section de passage est la nécessité éventuelle de développer un composant hydraulique sur mesure, au risque d'un long travail de mise au point. Un exemple de composants montés en série dans un dispositif hydraulique est décrit dans le brevet US3370543. Cette réalisation pose typiquement les problèmes exposés ci-dessus. La présente invention a notamment pour but de remédier aux inconvénients de l'art antérieur. A cet effet, l'invention a pour objet un dispositif hydraulique pour système de transmission de véhicule, notamment automobile, comportant un corps logeant plusieurs composants hydrauliques qui permettent chacun un passage d'huile, qui ont chacun une même fonction hydraulique et qui sont montés en parallèle dans le corps entre au moins une entrée et au moins une sortie du corps en autorisant chacun un passage d'huile suivant un débit déterminé de sorte que les débits des composants s'additionnent à travers le corps entre lesdites entrée et sortie du corps en correspondant à la somme des débits des composants. Dans divers modes de réalisation du dispositif selon l'invention, on peut éventuellement avoir recours en outre à l'une et/ou à l'autre des dispositions suivantes . les composants ont chacun un même débit de passage d'huile ; le corps est de révolution et est creusé d'une pluralité de cavités cylindriques coaxiales au corps pour recevoir chacune un composant hydraulique ; chaque cavité débouche axialement du corps en déterminant une embouchure d'entrée axiale et débouche à la périphérie du corps en déterminant une embouchure de sortie radiale ; le corps est pourvu d'un tronçon extérieurement fileté, est pourvu d'un tronçon lisse de diamètre inférieur à celui dudit tronçon fileté et comporte un épaulement raccordant le tronçon fileté et le tronçon lisse, de manière que les embouchures de sortie radiale débouchent en regard de l'épaulement ; le tronçon lisse détermine une empreinte hexagonale pouvant recevoir l'extrémité d'une clé pour permettre le vissage du dispositif sur un support tel qu'un carter d'un ensemble appartenant à la transmission du véhicule, les cavités cylindriques débouchant en outre dans l'empreinte hexagonale, pour constituer une autre sortie d'huile qui est une sortie axiale ; chaque composant hydraulique reçu dans sa cavités cylindriques du corps est pourvu d'une entrée axiale d'huile et d'une pluralité de sorties radiales d'huile ; chaque entrée axiale d'huile du composant hydraulique est en correspondance de son embouchure d'entrée axiale du corps et chaque pluralité de sorties radiales d'huile du composant hydraulique est au moins en correspondance de son embouchure de sortie radiale ; les composants hydrauliques sont des clapets anti-retour. The present invention relates to a hydraulic device for a vehicle transmission system. More particularly, the invention relates to such a device for application in a hydrostatic transmission of a motor vehicle. In such an application, the most common is to use standard hydraulic components such as miniature hydraulic components dedicated to the automobile. These components are economical because they are mass produced. These known components are, for example, check valves, valves, filters, components ensuring a restriction of fluid passage. A problem is that these components, certainly reliable, are generally limited in flow. Conventionally, such components are placed in series and, to increase the flow rate that can pass through the device, the section of passage is increased, thus the size of the component and the size of the device. This problem is all the more crucial as the increase in performance is not constant with the bulk. Another problem with this increase in the passage section is the possible need to develop a custom hydraulic component, at the risk of a long development work. An example of components mounted in series in a hydraulic device is described in US Pat. No. 3,370,543. This embodiment typically poses the problems outlined above. The present invention is intended to overcome the disadvantages of the prior art. For this purpose, the subject of the invention is a hydraulic device for a vehicle transmission system, in particular an automobile system, comprising a body housing a plurality of hydraulic components which each allow an oil passage, which each have the same hydraulic function and which are mounted in parallel in the body between at least one inlet and at least one outlet of the body, each allowing an oil passage at a determined flow rate so that the flow rates of the components add up through the body between said inlet and outlet of the body corresponding to the sum of the flow rates of the components. In various embodiments of the device according to the invention, one can optionally also resort to one and / or the other of the following provisions. the components each have the same oil flow rate; the body is of revolution and is hollowed out of a plurality of cylindrical cavities coaxial with the body to each receive a hydraulic component; each cavity opens axially from the body by determining an axial inlet mouth and opens out at the periphery of the body by determining a radial outlet mouth; the body is provided with an externally threaded section, is provided with a smooth section of smaller diameter than that of said threaded section and has a shoulder connecting the threaded section and the smooth section, so that the radial outlet mouths open towards the shoulder; the smooth section determines a hexagonal recess able to receive the end of a key to enable the device to be screwed onto a support such as a casing of an assembly belonging to the transmission of the vehicle, the cylindrical cavities further opening into the hexagonal imprint, to constitute another oil outlet which is an axial outlet; each hydraulic component received in its cylindrical body cavities is provided with an axial oil inlet and a plurality of radial oil outlets; each axial oil inlet of the hydraulic component is in correspondence of its axial inlet mouth of the body and each plurality of radial oil outlets of the hydraulic component is at least in correspondence of its radial outlet mouth; the hydraulic components are non-return valves.
D'autres buts, caractéristiques et avantages de l'invention apparaîtront au cours de la description suivante d'un de ses modes de réalisation, donné à titre d'exemple non limitatif, en regard des dessins joints. Sur les dessins : - la figure 1 est une vue en perspective en contre plongée d'un dispositif hydraulique selon l'invention ; la figure 2 est une vue en perspective en plongée du dispositif selon l'invention ; la figure 3 est une vue de côté d'un clapet anti-retour démonté du dispositif selon l'invention ; la figure 4 est une vue en coupe longitudinale partielle du dispositif selon l'invention équipé de ses clapets anti-retour ; la figure 5 est une vue en coupe longitudinale 25 partielle du dispositif selon l'invention avec ses clapets anti-retour démontés. Sur les différentes figures, les mêmes références désignent des éléments identiques ou similaires. En se reportant aux figures, la référence 10 30 désigne un dispositif hydraulique selon l'invention. Il est conçu pour équiper un système de transmission de véhicule, notamment automobile, par exemple une transmission type hydrostatique. Le dispositif hydraulique est prévu pour constituer un dispositif anti- 35 retour à débit important au regard d'une part des débits couramment utilisés dans une transmission de véhicule automobile et d'autre part des débits autorisés par les composants hydrauliques miniatures standards. Le dispositif hydraulique est équipé de trois clapets anti-retour 12. Ce dispositif comporte un corps de révolution 20 logeant les clapets 12 (figures 1, 2 et 4). Le corps 20 est pourvu d'un tronçon fileté 20A, ce filetage étant extérieur, et d'un tronçon lisse 20B de diamètre inférieur à celui dudit filetage. Le tronçon fileté 20A et le tronçon lisse 20B sont reliés entre eux par un épaulement 20C. Le tronçon lisse 20B détermine une empreinte hexagonale 22 permettant de recevoir l'extrémité d'une clé Allen pour le vissage du dispositif 10 sur un support tel qu'un carter d'un ensemble appartenant à la transmission du véhicule. Le corps 20 est une pièce en métal, par exemple venue de moulage. Il est creusé de trois cavités cylindriques 26 coaxiales au corps et qui débouchent d'une part à l'extrémité libre du tronçon fileté 20A en déterminant une embouchure d'entrée axiale 26A et d'autre part au niveau de l'épaulement 20C en déterminant une embouchure oblongue de sortie radiale 26B. Les cavités cylindriques 26 débouchent en outre dans l'empreinte hexagonale 22, pour constituer une autre sortie d'huile du dispositif selon l'invention (figures 2 et 5). Les cavités cylindriques 26 reçoivent chacune un clapet anti-retour 30 pourvu d'une entrée axiale d'huile 32 et d'une pluralité de sorties radiales d'huile 34 (figure 3). Chaque entrée axiale d'huile 32 des clapets anti-retour 30 est en correspondance de son embouchure d'entrée axiale 26A qui lui est dédiée dans le corps 20. De même, chaque pluralité de sorties radiales d'huile 34 est au moins partiellement en correspondance de l'embouchure de sortie radiale 26B qui lui est dédiée dans le corps 20. En outre, les sorties radiales d'huile 34 des clapets anti-retour 30 communiquent avec l'empreinte hexagonale 22, sachant qu'une partie centrale 26C du corps (figures 2 et 5) est à la croisée des cavités cylindriques 26 et le l'empreinte hexagonale 22, en regard d'une partie des sorties radiales d'huile 34. Les clapets anti-retour 30 comportent des étanchéités périphériques type joint torique 36, situées entre leurs entrées 32 et leurs sorties 34. Les clapets anti-retour 30 sont tous de même type et de même calibre pour faire passer le même débit. Ils sont constitués par des composants hydrauliques standards tels que des composants hydrauliques miniatures dédiés à l'automobile et de grande série. Par contre, malgré l'utilisation de composants hydrauliques miniatures, le dispositif hydraulique selon l'invention pourvu de ses trois composants hydrauliques miniatures montés en parallèle permet de disposer d'un débit important, sans dimensionnement spécifique d'un clapet anti-retour type grand débit. Le nombre de composants hydrauliques miniatures montés en parallèle dans le corps n'est pas limité à trois et de même, la forme du corps peut ne pas être globalement cylindrique mais peut être par exemple parallélépipédique rectangle. En variante, les composants hydrauliques montés en parallèle dans le dispositif selon l'invention sont des vannes, des filtres ou des composants assurant une restriction de passage de fluide. Other objects, features and advantages of the invention will become apparent from the following description of one of its embodiments, given by way of non-limiting example, with reference to the accompanying drawings. In the drawings: - Figure 1 is a perspective view against a dive of a hydraulic device according to the invention; FIG. 2 is a diagrammatic perspective view of the device according to the invention; Figure 3 is a side view of a non-return valve removed from the device according to the invention; Figure 4 is a partial longitudinal sectional view of the device according to the invention equipped with its non-return valves; Figure 5 is a partial longitudinal sectional view of the device according to the invention with its non-return valves dismantled. In the different figures, the same references designate identical or similar elements. Referring to the figures, numeral 30 denotes a hydraulic device according to the invention. It is designed to equip a vehicle transmission system, especially automobile, for example a hydrostatic type transmission. The hydraulic device is designed to constitute an anti-return device with a high flow rate in relation to the flow rates commonly used in a motor vehicle transmission and the flow rates authorized by the standard miniature hydraulic components. The hydraulic device is equipped with three non-return valves 12. This device comprises a body of revolution 20 housing the valves 12 (Figures 1, 2 and 4). The body 20 is provided with a threaded portion 20A, this thread being external, and a smooth section 20B of smaller diameter than said thread. The threaded portion 20A and the smooth section 20B are interconnected by a shoulder 20C. The smooth section 20B determines a hexagonal recess 22 for receiving the end of an Allen key for screwing the device 10 on a support such as a housing of a set belonging to the transmission of the vehicle. The body 20 is a piece of metal, for example molded. It is hollowed out by three cylindrical cavities 26 coaxial with the body and which open on the one hand to the free end of the threaded section 20A by determining an axial inlet mouth 26A and on the other hand at the shoulder 20C by determining an oblong mouth of radial outlet 26B. The cylindrical cavities 26 further open into the hexagonal recess 22, to constitute another oil outlet of the device according to the invention (Figures 2 and 5). The cylindrical cavities 26 each receive a non-return valve 30 provided with an axial oil inlet 32 and a plurality of radial oil outlets 34 (FIG. 3). Each axial oil inlet 32 of the non-return valves 30 is in correspondence of its axial inlet mouth 26A which is dedicated to it in the body 20. Similarly, each plurality of radial oil outlets 34 is at least partially in contact with each other. corresponding to the radial outlet mouth 26B which is dedicated thereto in the body 20. In addition, the radial oil outlets 34 of the non-return valves 30 communicate with the hexagonal imprint 22, knowing that a central portion 26C of the body (FIGS. 2 and 5) is at the crossroads of the cylindrical cavities 26 and the hexagonal recess 22, opposite a portion of the radial oil outlets 34. The check valves 30 comprise O-ring type peripheral seals 36, located between their inputs 32 and their outputs 34. The check valves 30 are all of the same type and the same size to pass the same flow. They are constituted by standard hydraulic components such as miniature hydraulic components dedicated to the automobile and large series. On the other hand, despite the use of miniature hydraulic components, the hydraulic device according to the invention provided with its three miniature hydraulic components connected in parallel makes it possible to have a high flow rate, without specific dimensioning of a large type non-return valve. debit. The number of miniature hydraulic components mounted in parallel in the body is not limited to three and similarly, the shape of the body may not be generally cylindrical but may for example be parallelepiped rectangle. Alternatively, the hydraulic components connected in parallel in the device according to the invention are valves, filters or components ensuring a restriction of fluid passage.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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FR1057415A FR2965034B1 (en) | 2010-09-16 | 2010-09-16 | HYDRAULIC DEVICE FOR VEHICLE TRANSMISSION SYSTEM |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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FR1057415A FR2965034B1 (en) | 2010-09-16 | 2010-09-16 | HYDRAULIC DEVICE FOR VEHICLE TRANSMISSION SYSTEM |
Publications (2)
Publication Number | Publication Date |
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FR2965034A1 true FR2965034A1 (en) | 2012-03-23 |
FR2965034B1 FR2965034B1 (en) | 2014-04-18 |
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FR1057415A Expired - Fee Related FR2965034B1 (en) | 2010-09-16 | 2010-09-16 | HYDRAULIC DEVICE FOR VEHICLE TRANSMISSION SYSTEM |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3370543A (en) * | 1966-07-20 | 1968-02-27 | Airtex Prod | Combined pulsator dome and check valve assembly |
US20020124893A1 (en) * | 2000-02-26 | 2002-09-12 | Dieter Frank | Braking pressure modulator for a trailer with electronic braking system |
DE102005025917A1 (en) * | 2005-06-06 | 2006-12-07 | Marco Systemanalyse Und Entwicklung Gmbh | Valve cartridge, for lockable non-return valves for gallery lining frame struts, has main piston and control piston actuated by fluid fed through transverse channel in casing into an annular gap between it and wall of piston mounting bore |
EP1840428A1 (en) * | 2006-03-30 | 2007-10-03 | Yamada Manufacturing Co., Ltd. | Relief valve |
-
2010
- 2010-09-16 FR FR1057415A patent/FR2965034B1/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3370543A (en) * | 1966-07-20 | 1968-02-27 | Airtex Prod | Combined pulsator dome and check valve assembly |
US20020124893A1 (en) * | 2000-02-26 | 2002-09-12 | Dieter Frank | Braking pressure modulator for a trailer with electronic braking system |
DE102005025917A1 (en) * | 2005-06-06 | 2006-12-07 | Marco Systemanalyse Und Entwicklung Gmbh | Valve cartridge, for lockable non-return valves for gallery lining frame struts, has main piston and control piston actuated by fluid fed through transverse channel in casing into an annular gap between it and wall of piston mounting bore |
EP1840428A1 (en) * | 2006-03-30 | 2007-10-03 | Yamada Manufacturing Co., Ltd. | Relief valve |
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FR2965034B1 (en) | 2014-04-18 |
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