WO2018115000A1 - Control comprising a body and a piston moving in the body - Google Patents
Control comprising a body and a piston moving in the body Download PDFInfo
- Publication number
- WO2018115000A1 WO2018115000A1 PCT/EP2017/083627 EP2017083627W WO2018115000A1 WO 2018115000 A1 WO2018115000 A1 WO 2018115000A1 EP 2017083627 W EP2017083627 W EP 2017083627W WO 2018115000 A1 WO2018115000 A1 WO 2018115000A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- piston
- cylindrical portion
- seal
- axis
- control
- 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.)
- Ceased
Links
Classifications
-
- 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
- F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
- F15B7/06—Details
- F15B7/08—Input units; Master units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
- B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
- B60T11/16—Master control, e.g. master cylinders
- B60T11/165—Single master cylinders for pressurised systems
-
- 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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1414—Characterised by the construction of the motor unit of the straight-cylinder type with non-rotatable piston
-
- 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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1414—Characterised by the construction of the motor unit of the straight-cylinder type with non-rotatable piston
- F15B15/1419—Characterised by the construction of the motor unit of the straight-cylinder type with non-rotatable piston of non-circular cross-section
-
- 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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/28—Means for indicating the position, e.g. end of stroke
- F15B15/2815—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT
- F15B15/2861—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT using magnetic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
- F16D2025/081—Hydraulic devices that initiate movement of pistons in slave cylinders for actuating clutches, i.e. master cylinders
Definitions
- Control comprising a body and a piston moving in the body
- the present invention relates to a control comprising a body, a piston housed in the body, and a rod, the piston being able to move in the body under the effect of the rod.
- Such a control may be a hydraulic actuator such as a hydraulic clutch actuator for motor vehicles or a pneumatic actuator, a pump or a magnet support.
- the invention relates to the field of hydraulic actuators, particularly to and more particularly relates to a control cylinder
- control cylinder it is necessary to prevent any rotation of the piston in the body during the translation thereof into the body.
- a cylinder transmitter of a hydraulic control device for a motor vehicle clutch equipped with a housing, for example electronic comprising a sensor which is assembled to the body of the hydraulic control cylinder.
- the sensor is configured to measure the position of the piston in the body for example by means of a transmitter arranged on the piston.
- the transmitter In order to optimize the measurement made by the sensor, it is necessary for the transmitter to maintain its orientation when the piston is sliding in the cylinder body.
- the invention aims to provide a control configured to prevent the rotation of the piston about its axis during its sliding inside the body.
- the subject of the present invention is a control comprising a body, a piston housed in the body, and a rod, the piston being able to move in the body under the effect of the rod and in which:
- the piston comprises a first cylindrical portion and a second cylindrical portion, the diameter of the first cylindrical portion being greater than that of the second cylindrical portion, the first cylindrical portion extends along a first axis and the second cylindrical portion extends according to a second axis, the first axis and the second axis being parallel and not coincidental, the piston being able to move in the body in translation in a direction substantially parallel to the first and second axes; the body having a first section interacting with the first cylindrical portion of the piston and a second section interacting with the second cylindrical portion of the piston; and
- the rod being attached to the first cylindrical portion of the piston.
- such a control makes it possible to dispense with any possible rotation of the piston on itself during the sliding thereof in the body without resorting to any additional part thereby reducing the manufacturing costs of the order .
- the misalignment of the first and second axes the piston can not turn on itself during the sliding movement inside the body.
- An order according to the invention may also include one or more of the following characteristics, considered individually or in any technically possible combination:
- the two cylindrical portions are connected by a central portion having a diameter less than or equal to the diameter of the second cylindrical portion; the central portion extends longitudinally along a third axis substantially coincident with the second axis;
- the first axis is the longitudinal axis of symmetry of the first cylindrical portion and the second axis is the longitudinal axis of symmetry of the second cylindrical portion;
- the relative distance between the first axis and the second axis is less than or equal to the difference in diameters between the first cylindrical portion and the second cylindrical portion;
- the relative distance between the first axis and the second axis is greater than 0.2 mm;
- control comprises a position sensor arranged on the outer surface of the body, the position sensor being configured to measure the relative position of the piston in the body;
- control comprises an emitter fixed on the piston, said emitter being detected by the position sensor;
- the transmitter has a magnet
- the piston is plastic
- the body is plastic; the rod is fixed on the first axis of the first cylindrical portion of the piston;
- control comprises at least one seal arranged and configured to seal between the piston and the body;
- control comprises a first seal arranged and configured to seal between the first cylindrical portion of the piston and the first section of the body and a second seal arranged and configured to seal between the second cylindrical portion the piston and the second section of the body;
- the first seal is mounted on the first cylindrical portion of the piston and the second seal is mounted on the second cylindrical portion of the piston;
- the first cylindrical portion of the piston has a groove configured to receive the first seal and the second cylindrical portion of the piston has a groove configured to receive the second seal;
- the first seal is mounted on the first section of the body and the second seal is mounted on the second section of the body; one of the first seal and the second seal is mounted on the piston and the other one of the first seal and the second seal is mounted on the body;
- the seal mounted on the piston is mounted on the first cylindrical portion of the piston
- the seal mounted on the piston is mounted on the second cylindrical portion of the piston
- control is a hydraulic actuator, a pneumatic actuator, a pump or a magnet holder;
- the first cylindrical portion and the second cylindrical portion each have a circular cross section
- the second cylindrical portion has a circular cross section and the first cylindrical portion has an oblong or elliptical cross section, the diameter of the first cylindrical portion being defined by the largest dimension of the oblong or elliptical cross section;
- the first section of the body has a length greater than or equal to 0.7 times the diameter of the first cylindrical part of the piston and / or the second section of the body has a length greater than or equal to 0.7 times the diameter of the second cylindrical portion of the piston.
- Figure 1 illustrates a schematic view of a first embodiment of a control according to the invention
- Figure 2 is a cross-sectional view of a piston of the control of Figure 1, wherein the cross sections of the two cylindrical portion of the piston are circular;
- FIG. 3 is a cross-sectional view of a piston of a control according to a sixth embodiment of the invention in which the cross-section of the second cylindrical portion of the piston is circular while that of the first cylindrical portion of the piston is elliptical;
- FIG. 4 is a cross-sectional view of a piston of a control according to a sixth embodiment of the invention in which the cross section of the second cylindrical portion of the piston is circular while that of the first cylindrical portion. the piston is oblong;
- Figure 5 is a schematic view of a second embodiment of a control according to the invention, comprising two seals mounted on the body of the control;
- Figure 6 is a schematic view of a third embodiment of a control according to the invention, comprising two seals mounted on the piston of the control;
- FIGS. 7 and 8 are diagrammatic views of a fourth and a fifth embodiment of a control according to the invention, comprising two seals, one being mounted on the body and the other on the first cylindrical portion ( Figure 7) or on the second cylindrical portion ( Figure 8) of the piston of the control.
- FIG. 1 represents an example of a first embodiment of a control 10 according to the invention, also called control cylinder or cylinder, here in the form of a transmitter of a control device of a clutch of motor vehicle.
- a control device comprises a transmitter cylinder 10 to be connected by a pipe to a receiving cylinder.
- the cylinder 10 comprises at least one body 12 extending axially along a principal axis A of longitudinal orientation, the body 12 is made of at least two parts, respectively a first section 12A said front section and a second section 12B said rear section of different diameters.
- the two sections 12A, 12B are connected by an intermediate section 12C flaring from the section having the smaller diameter to the larger diameter section.
- the body 12 is made of plastic.
- the first section 12A is open axially towards the front while the second section 12B delimited axially at the rear by a bottom 14 of transverse orientation.
- the body 12 of the control 10 has an internal bore 18 housing a piston 20 and in which the piston 20 slides axially, respectively forward or rear along the main axis A, between at least one rearmost position, so-called actuation, and an extreme front position, called rest.
- the internal bore 18 comprises a first cylindrical portion 18A formed in the first section 12A of the body, a second cylindrical portion 18B formed in the first section 12A of the body and an intermediate portion 18C formed in the intermediate section.
- the piston 20 is made of plastic or thermoplastic material, preferably in a thermosetting material.
- the control cylinder 10 comprises, at the rear, a variable volume chamber 22 which is delimited axially from rear to front by the bottom 14 of the second section 12B of the body 12 of the cylinder, by the internal bore 18 and by a front portion 24, such as a face of the piston 20.
- the control 10 further comprises a control rod 28 linked in motion to the piston 20 by a hinge (not shown) of the ball joint type.
- a control rod 28 linked in motion to the piston 20 by a hinge (not shown) of the ball joint type.
- the piston 20 housed in the bore of the body is able to move in the body under the effect of the rod.
- the control cylinder 10 is intended to expel to a fluid, such as air or oil contained in the chamber 22.
- the body 12 comprises a first pipe 32 arranged on the lateral surface of the body 12 and opening therein and a second pipe 34 arranged on the bottom 14 of the body and opening therein.
- the first pipe 32 is a fluid supply pipe while the second pipe 34 is a fluid outlet pipe under the action of the displacement of the piston.
- the piston 20 comprises a first cylindrical portion 20A and a second cylindrical portion 20B.
- the diameter D1 of the first cylindrical portion 20A is greater than that D2 of the second cylindrical portion 20B.
- first portion 12A of the body is configured to interact with the first cylindrical portion 20A of the piston and the second portion 12B of the body is configured to interact with the second cylindrical portion 20B of the piston.
- the first cylindrical portion 20A and the second cylindrical portion 20B each have a circular cross section.
- the first cylindrical portion has an elliptical cross-section as illustrated in FIG. 3.
- the diameter D1 'of the first cylindrical portion 120A is defined by the largest transverse dimension of the elliptical cross section, c' that is, the length of its major axis.
- the first cylindrical portion 220A has an oblong cross section while the second cylindrical portion 20B has a circular cross section.
- the diameter D1 "of the first cylindrical portion being the largest transverse dimension of the oblong cross-section.
- first cylindrical portion 20A extends along a first axis X1, preferably the longitudinal axis of symmetry of the first cylindrical portion and the second cylindrical portion 20B extends along a second axis X2, preferably the axis longitudinal symmetry of the second cylindrical portion.
- first axis X1 and the second axis X2 are parallel and not merged.
- the piston 20 is able to move in the body 12 in translation in a direction substantially parallel to the first and second axes X1, X2.
- the first axis X1 and the second axis X2 are distinct from one another and preferably spaced from each other by an orthogonal distance less than or equal to the difference between the diameter D1 of the first cylindrical portion 20A and the diameter D2 of the second cylindrical portion 20B.
- the orthogonal distance between the first axis X1 and the second axis X2 is at least greater than 0.2 mm.
- the two cylindrical portions 20A, 20B are connected by a central portion 20C having a diameter D3 less than or equal to the diameter of the first and second cylindrical portions.
- the central portion 20C extends longitudinally along a third axis X3 substantially coincides with the second axis X2. The diameter of this central portion smaller than that of the first and second parts of the piston reduces the manufacturing costs of the piston.
- the first section of the body has a length greater than or equal to 0.7 times the diameter D1 of the first cylindrical part of the piston and / or the second section of the body has a length greater than or equal to 0.7 times the diameter. D2 of the second cylindrical part of the piston.
- the rod 28 is attached to the first cylindrical portion 20A of the piston.
- the rod has an end attached to the first cylindrical portion of the piston on the first axis X1 of the first cylindrical portion of the piston.
- the control 10 further comprises a position sensor 40 arranged on the outer surface of the body 12.
- the position sensor 40 is configured to measure the relative position of the piston 20 in the body 12.
- the control advantageously comprises preferably a transmitter 42 attached to the piston configured to emit a signal representative of the position of the piston in the body and detected by the piston sensor.
- the transmitter has a magnet.
- the magnet of the position sensor can be oriented to maximize the measurement of the position of the piston and to optimize the performance of the position sensor. Similarly, its size and therefore its cost are optimized.
- control may comprise sealing means interposed radially between the body 12 and the piston 20.
- Figures 5 to 8 each illustrate another embodiment of a control according to the invention identical to that described in Figure 1.
- the controls according to these embodiments each advantageously comprise two seals arranged and configured to ensure the sealing between the body and the piston of the cylinder.
- two static seals 250A, 250B are arranged on the bore of the body, in particular on either side of the first pipe 32 .
- the two static seals 250A, 250B are arranged and configured to seal between the second cylindrical portion 20B of the piston and the second section 12B of the body.
- the seals can be mounted on the piston, as is the case in the third embodiment of a control 310 shown in FIG. 6.
- a first seal 350A is mounted on the first cylindrical portion 20A of the piston and a second seal 350B is mounted on the second cylindrical portion 20B of the piston.
- the first cylindrical portion 20A of the piston has a first groove 352A configured to receive the first seal 350A and the second cylindrical portion 20B of the piston has a second groove 352B configured to receive the second seal 350B.
- the seals 3250A, 350B are O-rings respectively mounted in the grooves 352A, 352B inner radial formed in the cylindrical outer periphery of the first portion 20A and the second portion 20B of the piston.
- Other forms of static sealing seals are conceivable.
- one of the seals is mounted on the piston while the other is mounted on the body, as is the case in the fourth and fifth embodiments of a control according to the invention shown in FIGS. and 8.
- a first seal 450A is mounted on the first cylindrical portion 20A of the piston.
- the first seal 450A is arranged and configured to seal between the first cylindrical portion 20A of the piston and the first portion 12A of the body.
- the first seal 450A is mounted in an inner radial groove 452A formed in the cylindrical outer periphery of the first cylindrical portion 20A of the piston.
- control 410 comprises a second seal 450B mounted on the second section 12B of the body and configured to seal between the second cylindrical portion 20B of the piston and the second section 12B of the body.
- the control 510 comprises a first seal 550A mounted on the second section 12B of the body.
- the first seal 550A is arranged and configured to ensure a seal between a portion cylindrical central cylinder 520C of the piston and the second section 12B of the body.
- control 510 includes a second seal 550B mounted on the second cylindrical portion 20B of the piston.
- the second seal 550B is mounted in an inner radial groove 552B formed in the cylindrical outer periphery of the second cylindrical portion 20B of the piston.
- the second seal 550B is configured to seal between the second cylindrical portion 20B of the piston and the second portion 12B of the body.
- Such a control according to the invention comprising a body and a piston housed in the body and configured to move in translation in the body without rotation of the piston on itself can be used as a hydraulic actuator, a pneumatic actuator, a pump or a magnet holder.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Actuator (AREA)
Abstract
Description
Commande comportant un corps et un piston se déplaçant dans le corps Control comprising a body and a piston moving in the body
La présente invention concerne une commande comportant un corps, un piston logé dans le corps, et une tige, le piston étant apte à se déplacer dans le corps sous l'effet de la tige. The present invention relates to a control comprising a body, a piston housed in the body, and a rod, the piston being able to move in the body under the effect of the rod.
L'invention s'applique au domaine des actionneurs comportant un piston de ce type et notamment, mais non exclusivement, dans le domaine des véhicules automobiles. Par exemple, une telle commande peut être un actionneur hydraulique tel qu'un actionneur hydraulique d'embrayage pour véhicules automobiles ou un actionneur pneumatique, une pompe ou un support d'aimant. The invention applies to the field of actuators comprising a piston of this type and in particular, but not exclusively, in the field of motor vehicles. For example, such a control may be a hydraulic actuator such as a hydraulic clutch actuator for motor vehicles or a pneumatic actuator, a pump or a magnet support.
L'invention se rapporte au domaine des actionneurs hydrauliques, notamment aux et concerne plus particulièrement un cylindre de commande The invention relates to the field of hydraulic actuators, particularly to and more particularly relates to a control cylinder
Selon certaines utilisation de ce type de commande, également appelée cylindre de commande, il est nécessaire d'empêcher une éventuelle rotation du piston dans le corps pendant la translation de celui-ci à l'intérieur du corps. C'est le cas par exemple, d'un cylindre émetteur d'un dispositif de commande hydraulique pour un embrayage de véhicule automobile équipé d'un boîtier, par exemple électronique, comportant un capteur qui est assemblé au corps du cylindre de commande hydraulique. Le capteur est configuré pour mesurer la position du piston dans le corps par exemple à l'aide d'un émetteur arrangé sur le piston. Afin d'optimiser la mesure faite par le capteur, il est nécessaire que l'émetteur conserve son orientation lors du coulissement du piston dans le corps du cylindre. According to some use of this type of control, also called control cylinder, it is necessary to prevent any rotation of the piston in the body during the translation thereof into the body. This is the case for example, a cylinder transmitter of a hydraulic control device for a motor vehicle clutch equipped with a housing, for example electronic, comprising a sensor which is assembled to the body of the hydraulic control cylinder. The sensor is configured to measure the position of the piston in the body for example by means of a transmitter arranged on the piston. In order to optimize the measurement made by the sensor, it is necessary for the transmitter to maintain its orientation when the piston is sliding in the cylinder body.
L'invention vise à proposer une commande configurée pour empêcher la rotation du piston autour de son axe au cours de son coulissement à l'intérieur du corps. The invention aims to provide a control configured to prevent the rotation of the piston about its axis during its sliding inside the body.
À cet effet, la présente invention a pour objet une commande comportant un corps, un piston logé dans le corps, et une tige, le piston étant apte à se déplacer dans le corps sous l'effet de la tige et dans laquelle : To this end, the subject of the present invention is a control comprising a body, a piston housed in the body, and a rod, the piston being able to move in the body under the effect of the rod and in which:
le piston comprend une première partie cylindrique et une deuxième partie cylindrique, le diamètre de la première partie cylindrique étant supérieur à celui de la deuxième partie cylindrique, la première partie cylindrique s'étend selon un premier axe et la deuxième partie cylindrique s'étend selon un deuxième axe, le premier axe et le deuxième axe étant parallèles et non confondus, le piston étant apte à se déplacer dans le corps en translation selon une direction sensiblement parallèle aux premier et deuxième axes ; le corps comportant un premier tronçon interagissant avec la première partie cylindrique du piston et un deuxième tronçon interagissant avec la deuxième partie cylindrique du piston ; et the piston comprises a first cylindrical portion and a second cylindrical portion, the diameter of the first cylindrical portion being greater than that of the second cylindrical portion, the first cylindrical portion extends along a first axis and the second cylindrical portion extends according to a second axis, the first axis and the second axis being parallel and not coincidental, the piston being able to move in the body in translation in a direction substantially parallel to the first and second axes; the body having a first section interacting with the first cylindrical portion of the piston and a second section interacting with the second cylindrical portion of the piston; and
la tige étant fixée à la première partie cylindrique du piston. the rod being attached to the first cylindrical portion of the piston.
Avantageusement, une telle commande permet de s'affranchir d'une éventuelle rotation du piston sur lui-même pendant le coulissement de celui-ci dans le corps sans avoir recours à une éventuelle pièce supplémentaire permettant ainsi de réduire les coûts de fabrication de la commande. En effet, le désalignement des du premier et du deuxième axes, le piston ne peut pas tourner sur lui-même pendant le mouvement de glissement à l'intérieur du corps. Advantageously, such a control makes it possible to dispense with any possible rotation of the piston on itself during the sliding thereof in the body without resorting to any additional part thereby reducing the manufacturing costs of the order . Indeed, the misalignment of the first and second axes, the piston can not turn on itself during the sliding movement inside the body.
De plus, le montage et l'installation d'une telle commande demeurent faciles. In addition, the assembly and installation of such a command remain easy.
Une commande selon l'invention peut également comprendre une ou plusieurs des caractéristiques ci-dessous, considérées individuellement ou selon toutes les combinaisons techniquement possibles : An order according to the invention may also include one or more of the following characteristics, considered individually or in any technically possible combination:
- les deux parties cylindriques sont reliées par une partie centrale présentant un diamètre inférieur ou égal au diamètre de la deuxième partie cylindrique ; la partie centrale s'étend longitudinalement selon un troisième axe sensiblement confondu avec le deuxième axe ; - The two cylindrical portions are connected by a central portion having a diameter less than or equal to the diameter of the second cylindrical portion; the central portion extends longitudinally along a third axis substantially coincident with the second axis;
le premier axe est l'axe longitudinal de symétrie de la première partie cylindrique et le deuxième axe est l'axe longitudinal de symétrie de la deuxième partie cylindrique ; the first axis is the longitudinal axis of symmetry of the first cylindrical portion and the second axis is the longitudinal axis of symmetry of the second cylindrical portion;
la distance relative entre le premier axe et le deuxième axe est inférieure ou égale à la différence de diamètres entre la première partie cylindrique et la deuxième partie cylindrique ; the relative distance between the first axis and the second axis is less than or equal to the difference in diameters between the first cylindrical portion and the second cylindrical portion;
- la distance relative entre le premier axe et le deuxième axe est supérieure à 0.2 mm ; the relative distance between the first axis and the second axis is greater than 0.2 mm;
la commande comporte un capteur de position arrangé sur la surface externe du corps, le capteur de position étant configuré pour mesurer la position relative du piston dans le corps ; the control comprises a position sensor arranged on the outer surface of the body, the position sensor being configured to measure the relative position of the piston in the body;
- la commande comporte un émetteur fixé sur le piston, ledit émetteur étant détecté par le capteur de position ; the control comprises an emitter fixed on the piston, said emitter being detected by the position sensor;
l'émetteur comporte un aimant ; the transmitter has a magnet;
le piston est en plastique ; the piston is plastic;
le corps est en plastique ; la tige est fixée sur le premier axe de la première partie cylindrique du piston ; the body is plastic; the rod is fixed on the first axis of the first cylindrical portion of the piston;
la commande comporte au moins un joint d'étanchéité agencé et configuré pour assurer l'étanchéité entre le piston et le corps ; the control comprises at least one seal arranged and configured to seal between the piston and the body;
la commande comporte un premier joint d'étanchéité agencé et configuré pour assurer l'étanchéité entre la première partie cylindrique du piston et le premier tronçon du corps et un deuxième joint d'étanchéité agencé et configuré pour assurer l'étanchéité entre la deuxième partie cylindrique du piston et le deuxième tronçon du corps ; the control comprises a first seal arranged and configured to seal between the first cylindrical portion of the piston and the first section of the body and a second seal arranged and configured to seal between the second cylindrical portion the piston and the second section of the body;
le premier joint d'étanchéité est monté sur la première partie cylindrique du piston et le deuxième joint d'étanchéité est monté sur la deuxième partie cylindrique du piston ; the first seal is mounted on the first cylindrical portion of the piston and the second seal is mounted on the second cylindrical portion of the piston;
la première partie cylindrique du piston comporte une gorge configurée pour recevoir le premier joint d'étanchéité et la deuxième partie cylindrique du piston comporte une gorge configurée pour recevoir le deuxième joint d'étanchéité ; the first cylindrical portion of the piston has a groove configured to receive the first seal and the second cylindrical portion of the piston has a groove configured to receive the second seal;
le premier joint d'étanchéité est monté sur le premier tronçon du corps et le deuxième joint d'étanchéité est monté sur le deuxième tronçon du corps ; l'un parmi le premier joint d'étanchéité et le deuxième joint d'étanchéité est monté sur le piston et l'autre parmi le premier joint d'étanchéité et le deuxième joint d'étanchéité est monté sur le corps ; the first seal is mounted on the first section of the body and the second seal is mounted on the second section of the body; one of the first seal and the second seal is mounted on the piston and the other one of the first seal and the second seal is mounted on the body;
le joint d'étanchéité monté sur le piston est monté sur la première partie cylindrique du piston ; the seal mounted on the piston is mounted on the first cylindrical portion of the piston;
le joint d'étanchéité monté sur le piston est monté sur la deuxième partie cylindrique du piston ; the seal mounted on the piston is mounted on the second cylindrical portion of the piston;
la commande est un actionneur hydraulique, un actionneur pneumatique, une pompe ou un support d'aimant ; the control is a hydraulic actuator, a pneumatic actuator, a pump or a magnet holder;
la première partie cylindrique et la deuxième partie cylindrique ont chacune une section transversale circulaire ; the first cylindrical portion and the second cylindrical portion each have a circular cross section;
la deuxième partie cylindrique a une section transversale circulaire et la première partie cylindrique a une section transversale oblongue ou elliptique, le diamètre de la première partie cylindrique étant défini par la dimension la plus grande de la section transversale oblongue ou elliptique ; the second cylindrical portion has a circular cross section and the first cylindrical portion has an oblong or elliptical cross section, the diameter of the first cylindrical portion being defined by the largest dimension of the oblong or elliptical cross section;
le premier tronçon du corps a une longueur supérieure ou égale à 0,7 fois le diamètre de la première partie cylindrique du piston et/ou le deuxième tronçon du corps a une longueur supérieure ou égale à 0,7 fois le diamètre de la deuxième partie cylindrique du piston. the first section of the body has a length greater than or equal to 0.7 times the diameter of the first cylindrical part of the piston and / or the second section of the body has a length greater than or equal to 0.7 times the diameter of the second cylindrical portion of the piston.
D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée des modes de réalisation donné à titre d'exemples non limitatifs et illustrés, accompagnée des figures ci-dessous : Other features and advantages of the invention will appear on reading the detailed description of the embodiments given by way of non-limiting examples and illustrated, accompanied by the figures below:
la figure 1 illustre une vue schématique d'un premier mode de réalisation d'une commande selon l'invention ; Figure 1 illustrates a schematic view of a first embodiment of a control according to the invention;
la figure 2 est une vue en coupe transversale d'un piston de la commande de la figure 1 , dans laquelle les sections transversales des deux partie cylindrique du piston sont circulaires ; Figure 2 is a cross-sectional view of a piston of the control of Figure 1, wherein the cross sections of the two cylindrical portion of the piston are circular;
la figure 3 est une vue en coupe transversale d'un piston d'une commande selon un sixième mode de réalisation de l'invention dans laquelle la section transversale de la deuxième partie cylindrique du piston est circulaire tandis que celle de la première partie cylindrique du piston est elliptique ; FIG. 3 is a cross-sectional view of a piston of a control according to a sixth embodiment of the invention in which the cross-section of the second cylindrical portion of the piston is circular while that of the first cylindrical portion of the piston is elliptical;
- la figure 4 est une vue en coupe transversale d'un piston d'une commande selon un sixième mode de réalisation de l'invention dans laquelle la section transversale de la deuxième partie cylindrique du piston est circulaire tandis que celle de la première partie cylindrique du piston est oblongue ; FIG. 4 is a cross-sectional view of a piston of a control according to a sixth embodiment of the invention in which the cross section of the second cylindrical portion of the piston is circular while that of the first cylindrical portion. the piston is oblong;
la figure 5 est une vue schématique d'un deuxième mode de réalisation d'une commande selon l'invention, comportant deux joints d'étanchéité montés sur le corps de la commande ; Figure 5 is a schematic view of a second embodiment of a control according to the invention, comprising two seals mounted on the body of the control;
la figure 6 est une vue schématique d'un troisième mode de réalisation d'une commande selon l'invention, comportant deux joints d'étanchéité montés sur le piston de la commande ; et Figure 6 is a schematic view of a third embodiment of a control according to the invention, comprising two seals mounted on the piston of the control; and
- les figures 7 et 8 sont des vues schématiques d'un quatrième et d'un cinquième mode de réalisation d'une commande selon l'invention, comportant deux joints d'étanchéité, l'un étant monté sur le corps et l'autre sur la première partie cylindrique (figure 7) ou sur la deuxième partie cylindrique (figure 8) du piston de la commande. FIGS. 7 and 8 are diagrammatic views of a fourth and a fifth embodiment of a control according to the invention, comprising two seals, one being mounted on the body and the other on the first cylindrical portion (Figure 7) or on the second cylindrical portion (Figure 8) of the piston of the control.
Sur les différentes figures, les éléments analogues sont désignés par des références identiques. En outre, les différents éléments ne sont pas nécessairement représentés à l'échelle afin de présenter une vue permettant de faciliter la compréhension de l'invention. In the various figures, the analogous elements are designated by identical references. In addition, the various elements are not necessarily represented on the scale in order to present a view making it easier to understand the invention.
Dans la suite de la description, on utilisera les termes « externe » et « interne », ou « extérieur » et « intérieur » ainsi que les orientations « axiale » et « radiale » pour désigner, selon les définitions données dans la description, des éléments de la commande. Par convention, l'orientation « radiale » est dirigée orthogonalement à l'axe X de coulissement du piston de la commande déterminant l'orientation « axiale » ou « longitudinale » et, de l'intérieur vers l'extérieur en s'éloignant dudit axe. Les termes « externe » et « interne » ou « extérieur » et « intérieur » sont utilisés pour définir la position relative d'un élément par rapport à un autre, par référence à l'axe X, un élément proche de l'axe est ainsi qualifié d'interne par opposition à un élément externe situé radialement en périphérie. Par ailleurs, les termes « arrière » AR et « avant » AV sont utilisés pour définir la position relative d'un élément par rapport à un autre selon la direction axiale. In the remainder of the description, the terms "external" and "internal" or "exterior" and "interior" will be used as well as the "axial" orientations and "Radial" to designate, according to the definitions given in the description, elements of the order. By convention, the "radial" orientation is directed orthogonally to the axis X of sliding of the piston of the control determining the "axial" or "longitudinal" orientation and, from the inside to the outside away from said axis. The terms "external" and "internal" or "outside" and "inside" are used to define the relative position of one element relative to another, with reference to the X axis, an element close to the axis is thus described as internal as opposed to an external element located radially at the periphery. Furthermore, the terms "back" AR and "forward" AV are used to define the relative position of one element relative to another in the axial direction.
La figure 1 représente un exemple d'un premier mode de réalisation d'une commande 10 selon l'invention, également appelée cylindre de commande ou cylindre, ici sous la forme d'un émetteur d'un dispositif de commande d'un embrayage de véhicule automobile. De manière connue, un tel dispositif de commande comporte un cylindre 10 émetteur destiné à être relié par une conduite à un cylindre récepteur. FIG. 1 represents an example of a first embodiment of a control 10 according to the invention, also called control cylinder or cylinder, here in the form of a transmitter of a control device of a clutch of motor vehicle. In known manner, such a control device comprises a transmitter cylinder 10 to be connected by a pipe to a receiving cylinder.
Le cylindre 10 comporte au moins un corps 12 s'étendant axialement suivant un axe principal A d'orientation longitudinale, le corps 12 est réalisé en au moins deux parties, respectivement un premier tronçon 12A dit tronçon avant et un deuxième tronçon 12B dit tronçon arrière de diamètres différents. Les deux tronçons 12A, 12B sont reliées par un tronçon intermédiaire 12C s'évasant du tronçon ayant le plus petit diamètre vers le tronçon de plus grand diamètre. The cylinder 10 comprises at least one body 12 extending axially along a principal axis A of longitudinal orientation, the body 12 is made of at least two parts, respectively a first section 12A said front section and a second section 12B said rear section of different diameters. The two sections 12A, 12B are connected by an intermediate section 12C flaring from the section having the smaller diameter to the larger diameter section.
Avantageusement, le corps 12 est réalisé en matière plastique. Advantageously, the body 12 is made of plastic.
Le premier tronçon 12A est ouvert axialement vers l'avant tandis que le deuxième tronçon 12B délimité axialement à l'arrière par un fond 14 d'orientation transversale. The first section 12A is open axially towards the front while the second section 12B delimited axially at the rear by a bottom 14 of transverse orientation.
Le corps 12 de la commande 10 comporte un alésage interne 18 logeant un piston 20 et dans lequel le piston 20 coulisse axialement, respectivement vers l'avant ou l'arrière suivant l'axe principal A, entre au moins une position extrême arrière, dite d'actionnement, et une position extrême avant, dite de repos. The body 12 of the control 10 has an internal bore 18 housing a piston 20 and in which the piston 20 slides axially, respectively forward or rear along the main axis A, between at least one rearmost position, so-called actuation, and an extreme front position, called rest.
L'alésage interne 18 comporte une première portion 18A cylindrique formée dans le premier tronçon 12A du corps, une deuxième portion 18B cylindrique formée dans le premier tronçon 12A du corps et une portion intermédiaire 18C formée dans le tronçon intermédiaire. Avantageusement, le piston 20 est réalisé en matière plastique ou thermoplastique, de préférence dans un matériau thermodurcissable. The internal bore 18 comprises a first cylindrical portion 18A formed in the first section 12A of the body, a second cylindrical portion 18B formed in the first section 12A of the body and an intermediate portion 18C formed in the intermediate section. Advantageously, the piston 20 is made of plastic or thermoplastic material, preferably in a thermosetting material.
Le cylindre de commande 10 comporte, à l'arrière, une chambre 22 à volume variable qui est délimitée axialement d'arrière en avant par le fond 14 du deuxième tronçon 12B du corps 12 du cylindre, par l'alésage interne 18 et par une partie avant 24, telle qu'une face du piston 20. The control cylinder 10 comprises, at the rear, a variable volume chamber 22 which is delimited axially from rear to front by the bottom 14 of the second section 12B of the body 12 of the cylinder, by the internal bore 18 and by a front portion 24, such as a face of the piston 20.
La commande 10 comporte en outre une tige de commande 28 liée en mouvement au piston 20 par une articulation (non illustrée) du type articulation à rotule. Ainsi, le piston 20 logé dans l'alésage du corps est apte à se déplacer dans le corps sous l'effet de la tige. The control 10 further comprises a control rod 28 linked in motion to the piston 20 by a hinge (not shown) of the ball joint type. Thus, the piston 20 housed in the bore of the body is able to move in the body under the effect of the rod.
En fonctionnement, le cylindre de commande 10 est destiné à expulser vers un fluide, tel que de l'air ou de l'huile contenu dans la chambre 22. A cet effet, le corps 12 comporte une première conduite 32 arrangée sur la surface latérale du corps 12 et débouchant dans celui-ci et une deuxième conduite 34 arrangée sur le fond 14 du corps et débouchant dans celui-ci. La première conduite 32 est une conduite d'alimentation en fluide tandis que la deuxième conduite 34 est une conduite de sortie du fluide sous l'action du déplacement du piston. In operation, the control cylinder 10 is intended to expel to a fluid, such as air or oil contained in the chamber 22. For this purpose, the body 12 comprises a first pipe 32 arranged on the lateral surface of the body 12 and opening therein and a second pipe 34 arranged on the bottom 14 of the body and opening therein. The first pipe 32 is a fluid supply pipe while the second pipe 34 is a fluid outlet pipe under the action of the displacement of the piston.
Selon l'invention, le piston 20 comprend une première partie cylindrique 20A et une deuxième partie cylindrique 20B. Le diamètre D1 de la première partie cylindrique 20A est supérieur à celui D2 de la deuxième partie cylindrique 20B. According to the invention, the piston 20 comprises a first cylindrical portion 20A and a second cylindrical portion 20B. The diameter D1 of the first cylindrical portion 20A is greater than that D2 of the second cylindrical portion 20B.
De plus, le premier tronçon 12A du corps est configuré pour interagir avec la première partie cylindrique 20A du piston et le deuxième tronçon 12B du corps est configuré pour interagir avec la deuxième partie cylindrique 20B du piston. In addition, the first portion 12A of the body is configured to interact with the first cylindrical portion 20A of the piston and the second portion 12B of the body is configured to interact with the second cylindrical portion 20B of the piston.
Selon le mode de réalisation illustré sur les figures 1 et 2, la première partie cylindrique 20A et la deuxième partie cylindrique 20B ont chacune une section transversale circulaire. According to the embodiment illustrated in Figures 1 and 2, the first cylindrical portion 20A and the second cylindrical portion 20B each have a circular cross section.
Alternativement, la première partie cylindrique a une section transversale elliptique telle qu'illustrée sur la figure 3. Dans ce cas, le diamètre D1 ' de la première partie cylindrique 120A est définit par la plus grande dimension transversale de la section transversale elliptique, c'est-à-dire la longueur de son grand axe. Alternatively, the first cylindrical portion has an elliptical cross-section as illustrated in FIG. 3. In this case, the diameter D1 'of the first cylindrical portion 120A is defined by the largest transverse dimension of the elliptical cross section, c' that is, the length of its major axis.
Selon une autre alternative illustrée en figure 4, la première partie cylindrique 220A présente une section transversale oblongue tandis que la deuxième partie cylindrique 20B présente une section transversale circulaire. Dans ce cas, on définit le diamètre D1 " de la première partie cylindrique comme étant la plus grande dimension transversale de la section transversale oblongue. According to another alternative illustrated in Figure 4, the first cylindrical portion 220A has an oblong cross section while the second cylindrical portion 20B has a circular cross section. In this case, we define the diameter D1 "of the first cylindrical portion being the largest transverse dimension of the oblong cross-section.
En outre, la première partie cylindrique 20A s'étend selon un premier axe X1 , de préférence l'axe longitudinal de symétrie de la première partie cylindrique et la deuxième partie cylindrique 20B s'étend selon un deuxième axe X2, de préférence l'axe longitudinal de symétrie de la deuxième partie cylindrique. Le premier axe X1 et le deuxième axe X2 sont parallèles et non confondus. In addition, the first cylindrical portion 20A extends along a first axis X1, preferably the longitudinal axis of symmetry of the first cylindrical portion and the second cylindrical portion 20B extends along a second axis X2, preferably the axis longitudinal symmetry of the second cylindrical portion. The first axis X1 and the second axis X2 are parallel and not merged.
Le piston 20 est apte à se déplacer dans le corps 12 en translation selon une direction sensiblement parallèle aux premier et deuxième axes X1 , X2. The piston 20 is able to move in the body 12 in translation in a direction substantially parallel to the first and second axes X1, X2.
Le premier axe X1 et le deuxième axe X2 sont distincts l'un de l'autre et de préférence espacés l'un de l'autre d'une distance orthogonale inférieure ou égale à la différence entre le diamètre D1 de la première partie cylindrique 20A et le diamètre D2 de la deuxième partie cylindrique 20B. Avantageusement, la distance orthogonale entre le premier axe X1 et le deuxième axe X2 est au moins supérieure à 0.2 mm. The first axis X1 and the second axis X2 are distinct from one another and preferably spaced from each other by an orthogonal distance less than or equal to the difference between the diameter D1 of the first cylindrical portion 20A and the diameter D2 of the second cylindrical portion 20B. Advantageously, the orthogonal distance between the first axis X1 and the second axis X2 is at least greater than 0.2 mm.
Le désalignement entre les deux axes de la première et de la deuxième partie cylindrique du piston et par conséquent de la première et de la deuxième portion de l'alésage formé dans le corps permet d'empêcher une éventuelle rotation du piston sur lui-même pendant un mouvement de coulissement à l'intérieur du corps. The misalignment between the two axes of the first and second cylindrical portion of the piston and consequently of the first and second portions of the bore formed in the body makes it possible to prevent any rotation of the piston on itself during a sliding movement inside the body.
Avantageusement et tel qu'illustré sur la figure 1 , les deux parties cylindriques 20A, 20B sont reliées par une partie centrale 20C présentant un diamètre D3 inférieur ou égal au diamètre de la première et de la deuxième parties cylindriques. En outre, la partie centrale 20C s'étend longitudinalement selon un troisième axe X3 sensiblement confondu avec le deuxième axe X2. Le diamètre de cette partie centrale plus petit que celui de la première et de la deuxième parties du piston permet de réduire les coûts de fabrication du piston. Advantageously and as illustrated in Figure 1, the two cylindrical portions 20A, 20B are connected by a central portion 20C having a diameter D3 less than or equal to the diameter of the first and second cylindrical portions. In addition, the central portion 20C extends longitudinally along a third axis X3 substantially coincides with the second axis X2. The diameter of this central portion smaller than that of the first and second parts of the piston reduces the manufacturing costs of the piston.
De préférence, le premier tronçon du corps a une longueur supérieure ou égale à 0,7 fois le diamètre D1 de la première partie cylindrique du piston et/ou le deuxième tronçon du corps a une longueur supérieure ou égale à 0,7 fois le diamètre D2 de la deuxième partie cylindrique du piston. Preferably, the first section of the body has a length greater than or equal to 0.7 times the diameter D1 of the first cylindrical part of the piston and / or the second section of the body has a length greater than or equal to 0.7 times the diameter. D2 of the second cylindrical part of the piston.
En outre, la tige 28 est fixée à la première partie cylindrique 20A du piston. De préférence, la tige comporte une extrémité fixée à la première partie cylindrique du piston sur le premier axe X1 de la première partie cylindrique du piston. Avantageusement, la commande 10 comporte en outre un capteur 40 de position arrangé sur la surface externe du corps 12. Le capteur de position 40 est configuré pour mesurer la position relative du piston 20 dans le corps 12. A cet effet, la commande comporte avantageusement de préférence un émetteur 42 fixé au piston configuré pour émettre un signal représentatif de la position du piston dans le corps et détecté par le capteur de piston. Par exemple, l'émetteur comporte un aimant. In addition, the rod 28 is attached to the first cylindrical portion 20A of the piston. Preferably, the rod has an end attached to the first cylindrical portion of the piston on the first axis X1 of the first cylindrical portion of the piston. Advantageously, the control 10 further comprises a position sensor 40 arranged on the outer surface of the body 12. The position sensor 40 is configured to measure the relative position of the piston 20 in the body 12. For this purpose, the control advantageously comprises preferably a transmitter 42 attached to the piston configured to emit a signal representative of the position of the piston in the body and detected by the piston sensor. For example, the transmitter has a magnet.
Grâce à la conception du piston et du corps selon l'invention empêchant une rotation du piston lors du mouvement de coulissement du piston dans le corps, l'aimant du capteur de position peut être orienté afin de maximiser la mesure de la position du piston et d'optimiser les performances du capteur de position. De même, sa dimension et par conséquent son coût s'en trouvent optimisés. Thanks to the design of the piston and the body according to the invention preventing a rotation of the piston during the sliding movement of the piston in the body, the magnet of the position sensor can be oriented to maximize the measurement of the position of the piston and to optimize the performance of the position sensor. Similarly, its size and therefore its cost are optimized.
Avantageusement, la commande peut comporter des moyens d'étanchéité interposés radialement entre le corps 12 et le piston 20. Advantageously, the control may comprise sealing means interposed radially between the body 12 and the piston 20.
Les figures 5 à 8 illustrent chacune un autre mode de réalisation d'une commande selon l'invention identique à celui décrit en figure 1. Les commandes selon ces modes de réalisation comportent avantageusement chacune deux joints d'étanchéité agencés et configurés pour assurer l'étanchéité entre le corps et le piston du cylindre. Figures 5 to 8 each illustrate another embodiment of a control according to the invention identical to that described in Figure 1. The controls according to these embodiments each advantageously comprise two seals arranged and configured to ensure the sealing between the body and the piston of the cylinder.
Par exemple, dans le second mode de réalisation d'une commande 210 illustré sur la figure 5, deux joints d'étanchéité statiques 250A, 250B sont agencés sur l'alésage du corps, notamment de part et d'autre de la première conduite 32. For example, in the second embodiment of a control 210 illustrated in Figure 5, two static seals 250A, 250B are arranged on the bore of the body, in particular on either side of the first pipe 32 .
Dans le cas illustré, les deux joints d'étanchéité statiques 250A, 250B sont agencés et configurés pour assurer l'étanchéité entre la deuxième partie cylindrique 20B du piston et le deuxième tronçon 12B du corps. In the illustrated case, the two static seals 250A, 250B are arranged and configured to seal between the second cylindrical portion 20B of the piston and the second section 12B of the body.
Alternativement, les joints d'étanchéité peuvent être montés sur le piston, comme c'est le cas dans le troisième mode de réalisation d'une commande 310 représenté en figure 6. Un premier joint d'étanchéité 350A est monté sur la première partie cylindrique 20A du piston et un deuxième joint d'étanchéité 350B est monté sur la deuxième partie cylindrique 20B du piston. Alternatively, the seals can be mounted on the piston, as is the case in the third embodiment of a control 310 shown in FIG. 6. A first seal 350A is mounted on the first cylindrical portion 20A of the piston and a second seal 350B is mounted on the second cylindrical portion 20B of the piston.
Ainsi, la première partie cylindrique 20A du piston comporte une première gorge 352A configurée pour recevoir le premier joint d'étanchéité 350A et la deuxième partie cylindrique 20B du piston comporte une seconde gorge 352B configurée pour recevoir le deuxième joint d'étanchéité 350B. Par exemple, les joints d'étanchéité 3250A, 350B sont des joints toriques montés respectivement dans les gorges 352A, 352B radiale intérieure formée dans la périphérie externe cylindrique de la première partie 20A et de la deuxième partie 20B du piston. D'autres formes de joints statiques d'étanchéité sont envisageables. Thus, the first cylindrical portion 20A of the piston has a first groove 352A configured to receive the first seal 350A and the second cylindrical portion 20B of the piston has a second groove 352B configured to receive the second seal 350B. For example, the seals 3250A, 350B are O-rings respectively mounted in the grooves 352A, 352B inner radial formed in the cylindrical outer periphery of the first portion 20A and the second portion 20B of the piston. Other forms of static sealing seals are conceivable.
Alternativement, un des joints d'étanchéité est monté sur le piston tandis que l'autre est monté sur le corps, comme c'est le cas dans les quatrième et cinquième modes de réalisation d'une commande selon l'invention représentée en figures 7 et 8. Alternatively, one of the seals is mounted on the piston while the other is mounted on the body, as is the case in the fourth and fifth embodiments of a control according to the invention shown in FIGS. and 8.
Selon le quatrième mode de réalisation d'une commande 410 illustrée sur la figure 7, un premier joint d'étanchéité 450A est monté sur la première partie cylindrique 20A du piston. Le premier joint d'étanchéité 450A est agencé et configuré pour assurer l'étanchéité entre la première partie cylindrique 20A du piston et le premier tronçon 12A du corps. According to the fourth embodiment of a control 410 shown in Figure 7, a first seal 450A is mounted on the first cylindrical portion 20A of the piston. The first seal 450A is arranged and configured to seal between the first cylindrical portion 20A of the piston and the first portion 12A of the body.
Le premier joint d'étanchéité 450A est monté dans une gorge 452A radiale intérieure formée dans la périphérie externe cylindrique de la première partie cylindrique 20A du piston. The first seal 450A is mounted in an inner radial groove 452A formed in the cylindrical outer periphery of the first cylindrical portion 20A of the piston.
De plus, la commande 410 comporte un second joint d'étanchéité 450B monté sur le deuxième tronçon 12B du corps et configuré pour assurer l'étanchéité entre la deuxième partie cylindrique 20B du piston et le deuxième tronçon 12B du corps. In addition, the control 410 comprises a second seal 450B mounted on the second section 12B of the body and configured to seal between the second cylindrical portion 20B of the piston and the second section 12B of the body.
Selon le cinquième mode de réalisation illustré sur la figure 8, la commande 510 comporte un premier joint d'étanchéité 550A monté sur le deuxième tronçon 12B du corps Le premier joint d'étanchéité 550A est agencé et configuré pour assurer l'étanchéité entre une partie cylindrique centrale 520C du piston et le deuxième tronçon 12B du corps. According to the fifth embodiment illustrated in FIG. 8, the control 510 comprises a first seal 550A mounted on the second section 12B of the body. The first seal 550A is arranged and configured to ensure a seal between a portion cylindrical central cylinder 520C of the piston and the second section 12B of the body.
De plus, la commande 510 comporte un second joint d'étanchéité 550B monté sur la deuxième partie cylindrique 20B du piston. Le deuxième joint d'étanchéité 550B est monté dans une gorge 552B radiale intérieure formée dans la périphérie externe cylindrique de la deuxième partie cylindrique 20B du piston. Le deuxième joint d'étanchéité 550B est configuré pour assurer l'étanchéité entre la deuxième partie cylindrique 20B du piston et le deuxième tronçon 12B du corps. In addition, the control 510 includes a second seal 550B mounted on the second cylindrical portion 20B of the piston. The second seal 550B is mounted in an inner radial groove 552B formed in the cylindrical outer periphery of the second cylindrical portion 20B of the piston. The second seal 550B is configured to seal between the second cylindrical portion 20B of the piston and the second portion 12B of the body.
Une telle commande selon l'invention comportant un corps et un piston logé dans le corps et configuré pour se déplacer en translation dans le corps sans rotation du piston sur lui-même peut être utilisé en tant qu'actionneur hydraulique, un actionneur pneumatique, une pompe ou un support d'aimant. Bien que l'invention ait été décrite en liaison avec différents modes de réalisation particuliers, il est bien évident qu'elle n'y est nullement limitée et qu'elle comprend tous les équivalents techniques des moyens décrits ainsi que leurs combinaisons si celles-ci entrent dans le cadre de l'invention. Such a control according to the invention comprising a body and a piston housed in the body and configured to move in translation in the body without rotation of the piston on itself can be used as a hydraulic actuator, a pneumatic actuator, a pump or a magnet holder. Although the invention has been described in connection with various particular embodiments, it is obvious that it is not limited thereto and that it comprises all the technical equivalents of the means described and their combinations if they are within the scope of the invention.
L'usage du verbe « comporter », « comprendre » ou « inclure » et de ses formes conjuguées n'exclut pas la présence d'autres éléments ou d'autres étapes que ceux énoncés dans une revendication. L'usage de l'article indéfini « un » ou « une » pour un élément ou une étape n'exclut pas, sauf mention contraire, la présence d'une pluralité de tels éléments ou étapes. The use of the verb "to include", "to understand" or "to include" and its conjugated forms does not exclude the presence of other elements or steps other than those set out in a claim. The use of the indefinite article "a" or "an" for an element or a step does not exclude, unless otherwise stated, the presence of a plurality of such elements or steps.
Dans les revendications, tout signe de référence entre parenthèses ne saurait être interprété comme une limitation de la revendication. In the claims, any reference sign in parentheses can not be interpreted as a limitation of the claim.
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201780086391.5A CN110291297B (en) | 2016-12-20 | 2017-12-19 | Control device including a body and a piston moving in the body |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1662836 | 2016-12-20 | ||
| FR1662836A FR3060673B1 (en) | 2016-12-20 | 2016-12-20 | CONTROL COMPRISING A BODY AND A PISTON MOVING INTO THE BODY |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2018115000A1 true WO2018115000A1 (en) | 2018-06-28 |
Family
ID=58707650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2017/083627 Ceased WO2018115000A1 (en) | 2016-12-20 | 2017-12-19 | Control comprising a body and a piston moving in the body |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN110291297B (en) |
| FR (1) | FR3060673B1 (en) |
| WO (1) | WO2018115000A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB550959A (en) * | 1940-07-29 | 1943-02-02 | Hydraulic Brake Co | Improvements in or relating to liquid pressure braking systems |
| FR2124200A1 (en) * | 1971-02-10 | 1972-09-22 | Levenez Yves | |
| DE102006012223B3 (en) * | 2006-03-16 | 2007-10-18 | Lucas Automotive Gmbh | Master cylinder assembly e.g. tandem master cylinder assembly, for hydraulic brake system of motor vehicle, has transfer unit arranged between piston arrangements and force input piston and including support ribs at outer circumference |
| EP2890595B1 (en) * | 2012-08-31 | 2016-10-19 | Schaeffler Technologies AG & Co. KG | Arrangement and method for securing an actuating rod system of an actuating pedal in a motor vehicle |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008057651A1 (en) * | 2007-12-17 | 2009-06-18 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Hydraulic cylinder for use as master cylinder in hydraulic path for actuating e.g. clutch, of motor vehicle, has piston unit with part carrying primary sealant, where part is formed as bearing surface, and pivot is arranged in sealant area |
| DE102014212670A1 (en) * | 2013-07-04 | 2015-01-08 | Schaeffler Technologies Gmbh & Co. Kg | Piston-cylinder unit |
| DE102014211430A1 (en) * | 2014-06-16 | 2015-12-17 | Schaeffler Technologies AG & Co. KG | Master cylinder for a clutch release system |
-
2016
- 2016-12-20 FR FR1662836A patent/FR3060673B1/en active Active
-
2017
- 2017-12-19 CN CN201780086391.5A patent/CN110291297B/en not_active Expired - Fee Related
- 2017-12-19 WO PCT/EP2017/083627 patent/WO2018115000A1/en not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB550959A (en) * | 1940-07-29 | 1943-02-02 | Hydraulic Brake Co | Improvements in or relating to liquid pressure braking systems |
| FR2124200A1 (en) * | 1971-02-10 | 1972-09-22 | Levenez Yves | |
| DE102006012223B3 (en) * | 2006-03-16 | 2007-10-18 | Lucas Automotive Gmbh | Master cylinder assembly e.g. tandem master cylinder assembly, for hydraulic brake system of motor vehicle, has transfer unit arranged between piston arrangements and force input piston and including support ribs at outer circumference |
| EP2890595B1 (en) * | 2012-08-31 | 2016-10-19 | Schaeffler Technologies AG & Co. KG | Arrangement and method for securing an actuating rod system of an actuating pedal in a motor vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3060673B1 (en) | 2019-05-31 |
| FR3060673A1 (en) | 2018-06-22 |
| CN110291297A (en) | 2019-09-27 |
| CN110291297B (en) | 2021-06-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| FR2924185A1 (en) | Clutch master cylinder for clutch of motor vehicle, has collar with front side cooperating with rear edge of piston, where rod is separated angularly above determined angle, where collar applies axial compression force on piston | |
| EP0351317A1 (en) | Improved actuator | |
| EP1075406B1 (en) | Improved hydraulic control device for clutch in particular for motor vehicles | |
| EP2739490B1 (en) | Rotary sealing device, and sealing ring for such a device | |
| WO2018115000A1 (en) | Control comprising a body and a piston moving in the body | |
| EP1102694A1 (en) | Simplified hydraulic control device for a clutch, especially for an automobile | |
| EP0877689B1 (en) | Braking assistance pneumatic servomotor with improved valve | |
| FR2788095A1 (en) | CLUTCH TRANSMITTER HYDRAULIC CYLINDER COMPRISING IMPROVED MEANS FOR AXIAL RETENTION OF THE PISTON ROD | |
| WO2002014705A1 (en) | Device for coupling a lever to a shift cylinder piston | |
| EP1054174B1 (en) | Cylinder for hydraulic clutch control | |
| WO2017121966A1 (en) | Hydraulic master cylinder with improved sealing device | |
| FR2794499A1 (en) | Clutch master cylinder for motor vehicle has retainer circlip fixed to piston rod extension and mounted on cylinder housing | |
| EP1102938B1 (en) | Piston and hydraulic control device for the clutch of an automobile provided with one such piston | |
| FR3115849A1 (en) | GEARBOX DIFFERENTIAL WITH SATELLITE CARRIER SHAFT STOP RINGS | |
| EP0802870B1 (en) | Pneumatic brake servo with a flexible valve | |
| FR3097931A1 (en) | RADIAL SEALING DEVICE | |
| FR2990256A1 (en) | Hydraulic transmitter for clutch control of motor vehicle, has hollow piston adapted to seal lateral orifice when transmitter is in rest position and to open orifice when hollow piston is abutted against opening of cylindrical cavity | |
| EP1349761B1 (en) | Brake booster for motor vehicle | |
| FR2764950A1 (en) | Sleeve for adjustable steering column for motor vehicle | |
| FR2790294A1 (en) | Break and clutch hydraulic control unit for cars includes inner bore with front and rear parts formed in front and rear parts of cylinder body and seal housed in central component of cylinder body | |
| FR2868486A1 (en) | Steering rack controlling jack for motor vehicle, has sealing unit with intermediate annular part having support side placed on lateral wall of piston, and annular joint contacting with lateral outer side of part and inner wall of cylinder | |
| FR3053085A1 (en) | RECEIVER HYDRAULIC CYLINDER FOR A HYDRAULIC CONTROL SYSTEM OF A CLUTCH | |
| EP0317424B1 (en) | Coupling device for a body and an axle arranged in that body, and a vehicle suspension cylinder using the device | |
| FR2891790A1 (en) | Tandem master cylinder for controlling motor vehicle braking system, has tubular sheath including guiding surfaces for guiding in translation pistons, and sealing gaskets cooperating with pistons for delimiting pressure and filling chambers | |
| FR2825304A1 (en) | Blank for making composite nut comprises principal body with central cavity extended by tubular collar to which washer is added |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 17825207 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 17825207 Country of ref document: EP Kind code of ref document: A1 |