EP0125992B1 - Ram, in particular a micro-ram, including a support device for mounting external supplementary elements - Google Patents

Ram, in particular a micro-ram, including a support device for mounting external supplementary elements Download PDF

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Publication number
EP0125992B1
EP0125992B1 EP84400942A EP84400942A EP0125992B1 EP 0125992 B1 EP0125992 B1 EP 0125992B1 EP 84400942 A EP84400942 A EP 84400942A EP 84400942 A EP84400942 A EP 84400942A EP 0125992 B1 EP0125992 B1 EP 0125992B1
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EP
European Patent Office
Prior art keywords
ram
support device
channel
support
ram according
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.)
Expired
Application number
EP84400942A
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German (de)
French (fr)
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EP0125992A1 (en
Inventor
Alain Casas
Roland Martinet
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Compair Climax SA
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Compair Climax SA
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Publication date
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Priority to AT84400942T priority Critical patent/ATE28351T1/en
Publication of EP0125992A1 publication Critical patent/EP0125992A1/en
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Publication of EP0125992B1 publication Critical patent/EP0125992B1/en
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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
    • 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
    • F15B15/2892—Means for indicating the position, e.g. end of stroke characterised by the attachment means

Definitions

  • the present invention relates to a jack, in particular a micro-jack, comprising a substantially hollow cylindrical body in which is movably mounted a piston dividing the internal space of said body into two chambers of variable volume, each of which is provided with an orifice for the fluid supply or for exhausting the chamber, and a device for supporting additional elements, if necessary indicator of an operating parameter of the jack, such as bars fixed to the external surface of the body .
  • the support device is fixed to the cylinder, next to the supply and exhaust orifices, separately from these.
  • the support device is produced in the form of a rail fixed to the cylindrical peripheral surface of the body in zones angularly offset with respect to the associated orifice to one of the two bedrooms.
  • the cylinder has at each end a rectangular flange of sufficient size to allow the fixing of a bar at each corner of the flange.
  • the orifices and connections of the chambers to the fluid supply device are provided on the front faces of the jack.
  • the support device makes the cylinders bulky and opposes the reduction of the dimensions thereof.
  • the present invention aims to provide a jack which can be produced even in the form of a micro jack, despite the presence of the support device.
  • the jack according to the invention is characterized in that the means for fixing the support device are mounted in the supply orifices and are formed by members capable of being introduced each, in particular screwed, into a supply orifice, each member being traversed by a channel allowing the passage of the pressurized fluid inside the jack.
  • this bar is of tubular shape and has an axial channel communicating at one end, through a passage made in the fixing means, with a supply orifice, while the other end serves as an inlet for supply fluid, the fluid supply connections being able to be located at the same end of the jack.
  • Figures 1 to 3 show a micro-cylinder 1 according to the present invention, which is equipped with a support device 2 adapted, in the example shown, to carry a magnetic sensor 3.
  • the cylinder comprises a substantially cylindrical hollow body 4 in which is mounted displaceable in a back-and-forth movement a piston 5 which divides the interior of the jack into two chambers 6 and 7 of variable volume.
  • Reference 11 designates the piston rod.
  • the cylinder is of the double-acting type.
  • Each chamber can be supplied with a pressurized fluid or exhausted through a supply orifice 8.
  • the body 4 comprises a tube 9 closed at each end by a tight closing flange 10.
  • the feed orifices 8 are formed in these flanges and extend perpendicular to the axis of these.
  • the piston 5 carries an annular permanent magnet 12 located between two sealing rings 13.
  • the magnetic sensor 3 is formed in the example represented by a relay of the Reed type, provided with a contact clearance 14 located inside of 'a bulb 15. Relays of this type are well known in the art and can signal, in a manner known per se, the passages of the piston 5 of the cylinder.
  • the support device 2 comprises two support bars 17 and two bar supports 18 each associated with a closure flange 10 of the jack.
  • the bars are advantageously formed by cylindrical rods, but can be of any other suitable shape. They are fixed to the supports 18 by fitting their ends into appropriate holes made in the parts forming the support-bar 18.
  • a very stable support device is obtained here for the magnetic sensors 3 or for any other desired accessory or additional device, intended if necessary in the oven provide information relating to certain parameters of the actuator's operation. These devices will advantageously be supported by the rods 17.
  • the support device 2 is assembled to the jack 1 by fixing each piece of stop support 18 to a closure flange 10 of the jack, by means of a fixing screw 20 which is screws directly into the supply orifice 8 of this flange, provided for this purpose with a threaded portion 21.
  • each screw 20 comprises an axial supply channel 22 which la crosses entirely.
  • the head portion of the screw is shaped to allow connection to a supply tube or manifold (not shown).
  • the head has in Figure 2 a central threaded recess 23 having a diameter greater than that of the channel 22.
  • connection of the screw hollow to a supply tube 25 is obtained by the insertion of a push-in fitting 26 known per se.
  • Reference numerals 27 to 32 respectively designate an O-ring, a fan washer, a metal washer, a thrust element 30 and a retaining ring 31.
  • Figures 5 to 7 show another embodiment of the support device 2 and a cylinder 1 according to the present invention.
  • the support bars are tubular, which makes it possible to use at least one of these bars as a channel for supplying fluid under pressure to a chamber of the jack. In this way, it is possible to provide the two connections to the supply device, at the same end of the jack.
  • the bar support pieces and the fixing screws are somewhat special.
  • these elements are designated by references 18 'and 20'.
  • the bar support 18 ′ on the right has the two supply orifices indicated by 32, 33. These orifices or recesses shaped for connection to the supply system extend parallel to the axis of the cylinder.
  • the orifice 32 communicates directly with the fixing hole 35 of the support 18 ', intended for the reception of the fixing screw 20'.
  • the orifice 33 communicates with the hole 35 for receiving the fixing screw of the other bar support 18 ', by means of the corresponding tubular bar 17' and of the conduits 37, 38 formed respectively in the connection support 18 'and the left-hand bar support, that is to say without any supply orifices.
  • Figure 7 shows the fastening screws 20 'matched to the tubular bars.
  • the screws 18 ′ have, at the level of the conduit 38, a transverse channel 39 which communicates via an axial channel 40 with the internal space of the jack.
  • FIGS. 8 and 9 show an embodiment of a jack according to the present invention, in which the support device or more precisely the bars are used to support one or more control tapping flanges.
  • two tapping flanges 42 are interposed between the two support-bars 18.
  • Each flange has a channel 43 which passes through it.
  • the upper part of the channel is widened to form a threaded recess allowing connection to an external device.
  • These recesses could be made so as to allow an instantaneous connection of the type shown in FIG. 4.
  • the lower part of the channel passing through the flange communicates with the interior of the jack through a hole 45 passing through the tube 8 of the body of the jack.
  • control stitching devices can be used for any purpose.
  • the two flanges are arranged so as to allow the signaling of the end positions of the piston.
  • a logic device will be associated with each flange, for example with two inputs connected respectively to the corresponding supply orifice and to the flange.
  • the bars can be used as a support member for an additional device and / or to serve as a tube incorporated in the pressurized fluid supply system, of the jack, like this is illustrated in Figures 5 to 7.
  • the fixing screws can perform in addition to their actual fixing function, additional functions such as for example those of the speed adjustment means. To this end, it is necessary to ensure, as is known per se, that the cross section of passage of the pressurized fluid is variable.
  • the cylinders according to the invention which have been described and shown can be modified in various ways without leaving the scope of the invention.
  • the cylinders can be of the single acting type.
  • the control tapping flanges can be adjustable.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Micromachines (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

1. Ram, particularly micro-ram, comprising a substantially cylindrical, hollow body (4) in which is movably mounted a piston (5) dividing the internal space of the said body (4) into two chambers of variable volume (6, 7) each of them being provided with a port (8) for fluid supply or fluid exhaust of the chamber (6 or 7), and a support device (2) of supplementary elements (3, 42), if necessary indicating a parameter of the ram functioning, such as bars (17) fixed on the external surface of the body (4), characterized in that the fixing means (20, 20') of the support device (2) are mounted in the feeding ports (8) and are formed by members likely to be introduced each one, notably screwed, in a feeding port (8), each member (20, 20') passed by a channel allowing the inlet of the forced fluid to the interior of the ram.

Description

La présente invention concerne un vérin, notamment un micro-vérin, comprenant un coprs sensiblement cylindrique creux dans lequel est monté mobile un piston divisant l'espace interne dudit corps en deux chambres de volume variable, dont chacune est pourvue d'un orifice pour l'alimentation en fluide ou pour la mise à l'échappement de la chambre, et un dispositif de support d'éléments supplémentaires, le cas échéant indicateur d'un paramètre de fonctionnement du vérin, telles que des barrettes fixées sur la surface externe du corps.The present invention relates to a jack, in particular a micro-jack, comprising a substantially hollow cylindrical body in which is movably mounted a piston dividing the internal space of said body into two chambers of variable volume, each of which is provided with an orifice for the fluid supply or for exhausting the chamber, and a device for supporting additional elements, if necessary indicator of an operating parameter of the jack, such as bars fixed to the external surface of the body .

Dans les vérins connus de ce type, le dispositif de support est fixé sur le vérin, à côté des orifices d'alimentation et d'échappement, séparément de ceux-ci. Ainsi, dans le vérin décrit dans la FR-A-2 299 541, le dispositif de support est réalisé sous forme d'un rail fixé sur la surface périphérique cylindrique du corps dans des zones an- gulairement décalées par rapport à l'orifice associé à l'une des deux chambres. Dans le vérin selon la US-A-4 230 023, le vérin présente à chaque extrémité une bride de forme rectangulaire de dimension suffisante pour permettre la fixation d'une barrette à chaque coin de la bride. Les orifices et les raccords des chambres au dispositif d'alimentation en fluide sont prévus sur les faces frontales du vérin.In known cylinders of this type, the support device is fixed to the cylinder, next to the supply and exhaust orifices, separately from these. Thus, in the jack described in FR-A-2 299 541, the support device is produced in the form of a rail fixed to the cylindrical peripheral surface of the body in zones angularly offset with respect to the associated orifice to one of the two bedrooms. In the cylinder according to US-A-4 230 023, the cylinder has at each end a rectangular flange of sufficient size to allow the fixing of a bar at each corner of the flange. The orifices and connections of the chambers to the fluid supply device are provided on the front faces of the jack.

On comprend aisément que le dispositif de support rend encombrants les vérins et s'oppose à la réduction des dimensions de ceux-ci.It is easy to understand that the support device makes the cylinders bulky and opposes the reduction of the dimensions thereof.

La présente invention a pour but de proposer un vérin qui peut être réalisé même sous forme d'un micro-vérin, malgré la présence du dispositif du support.The present invention aims to provide a jack which can be produced even in the form of a micro jack, despite the presence of the support device.

Pour atteindre ce but, le vérin selon l'invention est caractérisé en ce que les moyens de fixation du dispositif de support sont montés dans les orifices d'alimentation et sont formés par des organes susceptibles d'être introduits chacun, notamment vissés, dans un orifice d'alimentation, chaque organe étant traversé par un canal permettant le passage du fluide sous pression à l'intérieur du vérin.To achieve this object, the jack according to the invention is characterized in that the means for fixing the support device are mounted in the supply orifices and are formed by members capable of being introduced each, in particular screwed, into a supply orifice, each member being traversed by a channel allowing the passage of the pressurized fluid inside the jack.

Suivant une caractéristique avantageuse de l'invention, pour un vérin dont le dispositif de support est formé par au moins une barrette s'étendant le long du vérin, cette barrette est de forme tubulaire et présente un canal axial communiquant à une extrémité, à travers un passage pratiqué dans le moyen de fixation, avec un orifice d'alimentation, tandis que l'autre extrémité sert d'entrée de fluide d'alimentation, les raccords d'alimentation des fluides pouvant être situés à une même extrémité du vérin.According to an advantageous characteristic of the invention, for a jack whose support device is formed by at least one bar extending along the jack, this bar is of tubular shape and has an axial channel communicating at one end, through a passage made in the fixing means, with a supply orifice, while the other end serves as an inlet for supply fluid, the fluid supply connections being able to be located at the same end of the jack.

L'invention sera mieux comprise et d'autres buts, caractéristiques, détails et avantages de celle-ci apparaîtront plus clairement au cous de la description explicative qui va suivre, faite en référence aux dessins annexés donnés uniquement à titre d'exemple illustrant plusieurs modes de réalisation de l'invention et dans lesquels;

  • - la figure 1 est une vue en perspective d'un vérin selon la présente invention, équipé d'un dispositif de support;
  • - la figure 2 est une vue en coupe perpendiculaire à l'axe du vérin, suivant la ligne II-II de la figure 1, à plus grande échelle;
  • - la figure 3 est une vue en coupe axiale du vérin selon la figure 1;
  • - la figure 4 est une vue en coupe axiale d'une vis de fixation à raccord instantané, pour la fixation su dispositif de support selon la présente invention;
  • - la figure 5 est une vue en perspective d'un dispositif de support comprenant des barrettes creuses, selon la présente invention;
  • - la figure 6 est une vue de dessus d'un vérin équipé d'un dispositif de support suivant la figure 5 représenté en une vue en coupe suivant la ligne VI-VI;
  • - la figure 7 est une vue en coupe suivant la ligne VII-VII de la figure 6, à échelle réduite;
  • - la figure 8 est une vue en perspective d'un vérin équipé de dispositifs de piquage de contrôle, selon la présente invention, et
  • - 'la figure 9 est une vue en coupe axiale du vérin selon la figure 8.
The invention will be better understood and other objects, characteristics, details and advantages thereof will appear more clearly at the neck of the explanatory description which follows, made with reference to the appended drawings given solely by way of example illustrating several modes of the invention and in which;
  • - Figure 1 is a perspective view of a jack according to the present invention, equipped with a support device;
  • - Figure 2 is a sectional view perpendicular to the cylinder axis, along the line II-II of Figure 1, on a larger scale;
  • - Figure 3 is an axial sectional view of the cylinder according to Figure 1;
  • - Figure 4 is an axial sectional view of a fixing screw with instantaneous connection, for fixing su support device according to the present invention;
  • - Figure 5 is a perspective view of a support device comprising hollow bars, according to the present invention;
  • - Figure 6 is a top view of a jack equipped with a support device according to Figure 5 shown in a sectional view along line VI-VI;
  • - Figure 7 is a sectional view along line VII-VII of Figure 6, on a reduced scale;
  • FIG. 8 is a perspective view of a jack fitted with control stitching devices, according to the present invention, and
  • FIG. 9 is a view in axial section of the jack according to FIG. 8.

Les figures 1 à 3 montrent un micro-vérin 1 selon la présente invention, qui est équipé d'un dispositif de support 2 adapté, dans l'exemple représenté, pour porter un capteur magnétique 3. Le vérin comporte un corps creux sensiblement cylindrique 4 dans lequel est monté déplaçable suivant un mouvement de va-et-vient un piston 5 qui divise l'intérieur du vérin en deux chambres 6 et 7 de volume vatiable. La référence 11 désigne la tige du piston. Le vérin est du type à double effet. Chaque chambre peut être alimentée en un fluide sous pression ou mise à l'échappement à travers un orifice d'alimentation 8. Dans l'exemple représenté, le corps 4 comporte un tube 9 fermé à chaque extrémité par une bride de fermeture étanche 10. Les orifices d'alimentation 8 sont pratiqués dans ces brides et s'étendent perpendiculairement à l'axe de celles-ci. Le piston 5 porte un aimant permanent annulaire 12 situé entre deux bagues d'étanchéité 13. Le capteur magnétique 3 est formé dans l'exemple représenté par un relais du type Reed, pourvu d'un jeu de contact 14 situé à l'intérieur d'une ampoule 15. Des relais de ce type sont bien connus dans la technique et permettent de signaler, de façon connue en soi, les passages du piston 5 du vérin.Figures 1 to 3 show a micro-cylinder 1 according to the present invention, which is equipped with a support device 2 adapted, in the example shown, to carry a magnetic sensor 3. The cylinder comprises a substantially cylindrical hollow body 4 in which is mounted displaceable in a back-and-forth movement a piston 5 which divides the interior of the jack into two chambers 6 and 7 of variable volume. Reference 11 designates the piston rod. The cylinder is of the double-acting type. Each chamber can be supplied with a pressurized fluid or exhausted through a supply orifice 8. In the example shown, the body 4 comprises a tube 9 closed at each end by a tight closing flange 10. The feed orifices 8 are formed in these flanges and extend perpendicular to the axis of these. The piston 5 carries an annular permanent magnet 12 located between two sealing rings 13. The magnetic sensor 3 is formed in the example represented by a relay of the Reed type, provided with a contact clearance 14 located inside of 'a bulb 15. Relays of this type are well known in the art and can signal, in a manner known per se, the passages of the piston 5 of the cylinder.

Dans l'exemple représenté, le dispositif de support 2 comprend deux barrettes de support 17 et deux supports barrette 18 chacun associé à une bride de fermeture 10 du vérin. Les barrettes sont avantageusement formées par des tiges cylindriques, mais peuvent être de toute autre forme appropriée. Elles sont fixées aux supports 18 par emmanchement de leur extrémité dans des trous appropriés pratiqués dans les pièces formant support-barrette 18. On obtient ici un dispositif de support très stable pour les capteurs magnétiques 3 ou pour tout autre dispositif accessoire ou supplémentaire désiré, destiné le cas échéant à fournir des informations relatives à certains paramètres du fonctionnement du vérin. Ces dispositifs seront avantageusement supportés par les tiges 17.In the example shown, the support device 2 comprises two support bars 17 and two bar supports 18 each associated with a closure flange 10 of the jack. The bars are advantageously formed by cylindrical rods, but can be of any other suitable shape. They are fixed to the supports 18 by fitting their ends into appropriate holes made in the parts forming the support-bar 18. A very stable support device is obtained here for the magnetic sensors 3 or for any other desired accessory or additional device, intended if necessary in the oven provide information relating to certain parameters of the actuator's operation. These devices will advantageously be supported by the rods 17.

Selon la présente invention, le dispositif de support 2 est assemblé au vérin 1 par fixation de chaque pièce de support d'arrêt 18 à une bride de fermeture 10 du vérin, par l'intermédiaire d'une vis de fixation 20 que l'on visse directement dans l'orifice d'alimentation 8 de cette bride, pourvue à cette fin d'une partie taraudée 21. Pour assurer l'alimentation en fluide sous pression du vérin, chaque vis 20 comporte un canal d'alimentation axiale 22 qui la traverse entièrement. La partie formant tête de la vis est conformée pour permettre le raccord à un tube ou tubulure d'alimentation (non représenté). A cette fin, la tête présente à la figure 2 un évidement central fileté 23 présentant un diamètre supérieur à celui du canal 22. Dans le mode de réalisation d'une vis de fixation 20, représentée à la figure 4, le raccordement de la vis creuse à un tube d'alimentation 25 est obtenu par l'insertion d'un raccord instantané 26 connu en soi. Les chiffres de référence 27 à 32 désignent respectivement un joint torique, une rondelle éventail, une rondelle métallique, un élément de poussée 30 et une bague de retenue 31.According to the present invention, the support device 2 is assembled to the jack 1 by fixing each piece of stop support 18 to a closure flange 10 of the jack, by means of a fixing screw 20 which is screws directly into the supply orifice 8 of this flange, provided for this purpose with a threaded portion 21. To ensure the supply of pressurized fluid to the jack, each screw 20 comprises an axial supply channel 22 which la crosses entirely. The head portion of the screw is shaped to allow connection to a supply tube or manifold (not shown). To this end, the head has in Figure 2 a central threaded recess 23 having a diameter greater than that of the channel 22. In the embodiment of a fixing screw 20, shown in Figure 4, the connection of the screw hollow to a supply tube 25 is obtained by the insertion of a push-in fitting 26 known per se. Reference numerals 27 to 32 respectively designate an O-ring, a fan washer, a metal washer, a thrust element 30 and a retaining ring 31.

Les figures 5 à 7 montrent un autre mode de réalisation du dispositif de support 2 et d'un vérin 1 selon la présente invention. Dans ce cas, les barrettes de support sont tubulaires ce qui permet d'utiliser au moins l'une de ces barrettes comme canal d'alimentation en fluide sous pression d'une chambre du vérin. De cette manière, il est possible de prévoir les deux raccordements au dispositif d'alimentation, à une même extrémité du vérin. Dans ce cas, les pièces de support-barrette et les vis de fixation sont conformées de façon quelque peu particulière. Aux figures 5 et 6, ces éléments sont désignés par des références 18' et 20'.Figures 5 to 7 show another embodiment of the support device 2 and a cylinder 1 according to the present invention. In this case, the support bars are tubular, which makes it possible to use at least one of these bars as a channel for supplying fluid under pressure to a chamber of the jack. In this way, it is possible to provide the two connections to the supply device, at the same end of the jack. In this case, the bar support pieces and the fixing screws are somewhat special. In Figures 5 and 6, these elements are designated by references 18 'and 20'.

Comme le montre la figure 6, le support-barrette 18' de droite comporte les deux orifices d'alimentation indiquées par 32, 33. Ces orifices ou évidements conformés pour le raccordement au système d'alimentation s'étendent parallèlement à l'axe du vérin. L'orifice 32 communique directement avec le trou de fixation 35 du support 18', destiné à la réception de la vis de fixation 20'. L'orifice 33 communique avec le trou 35 de réception de la vis de fixation de l'autre support-barrette 18', par l'intermédiaire de la barrette tubulaire 17' correspondante et des conduits 37, 38 pratiqués respectivement dans le suport de raccordement 18' et le support-barrette de gauche, c'est-à-dire dépourvu d'orifices d'alimentation. La figure 7 montre les vis de fixation 20' assorties aux barrettes tubulaires. Les vis 18' comportent au niveau du conduit 38 un canal transversal 39 qui communique par l'intermédiaire d'un canal axial 40 avec l'espace interne du vérin.As shown in FIG. 6, the bar support 18 ′ on the right has the two supply orifices indicated by 32, 33. These orifices or recesses shaped for connection to the supply system extend parallel to the axis of the cylinder. The orifice 32 communicates directly with the fixing hole 35 of the support 18 ', intended for the reception of the fixing screw 20'. The orifice 33 communicates with the hole 35 for receiving the fixing screw of the other bar support 18 ', by means of the corresponding tubular bar 17' and of the conduits 37, 38 formed respectively in the connection support 18 'and the left-hand bar support, that is to say without any supply orifices. Figure 7 shows the fastening screws 20 'matched to the tubular bars. The screws 18 ′ have, at the level of the conduit 38, a transverse channel 39 which communicates via an axial channel 40 with the internal space of the jack.

Les figures 8 et 9 montrent un mode de réalisation d'un vérin selon la présente invention, dans lequel le dispositif de support ou plus précisément les barrettes sont utilisées pour supporter une ou plusieurs brides de piquage de contrôle. Dans l'exemple représenté, deux brides de piquage 42 sont intercalées entre les deux support- barrettes 18. Chaque bride comporte un canal 43 qui la traverse. La partie supérieure du canal est élargie pour former un évidement taraudé permettant le raccordement à un dispositif extérieur. Ces évidements pourraient être réalisés de façon à permettre un raccord instantané du type représenté à la figure 4. La partie inférieure du canal traversant la bride communique avec l'intérieur du vérin par un trou 45 traversant le tube 8 du corps du vérin.FIGS. 8 and 9 show an embodiment of a jack according to the present invention, in which the support device or more precisely the bars are used to support one or more control tapping flanges. In the example shown, two tapping flanges 42 are interposed between the two support-bars 18. Each flange has a channel 43 which passes through it. The upper part of the channel is widened to form a threaded recess allowing connection to an external device. These recesses could be made so as to allow an instantaneous connection of the type shown in FIG. 4. The lower part of the channel passing through the flange communicates with the interior of the jack through a hole 45 passing through the tube 8 of the body of the jack.

Ces dispositifs de piquage de contrôle peuvent être utilisés à toutes fins utiles. Dans le cas représenté, les deux brides sont disposées de façon à permettre la signalisation des positions de fin de course du piston. Dans ce but, on associera à chaque bride un dispositif logique, par exemle à deux entrées reliées respectivement à l'orifice d'alimentation correspondante et à la bride.These control stitching devices can be used for any purpose. In the case shown, the two flanges are arranged so as to allow the signaling of the end positions of the piston. For this purpose, a logic device will be associated with each flange, for example with two inputs connected respectively to the corresponding supply orifice and to the flange.

Il est à noter dans le cadre de la présente invention, que les barrettes peuvent être utilisées comme organe de support d'un dispositif supplémentaire et/ou pour servir de tube incorporé au système d'alimentation en fluide sous pression, du vérin, comme cela est illustré aux figures 5 à 7. De plus, les vis de fixation peuvent accomplir outre leur fonction de fixation proprement dite, des fonctions supplémentaires telles que par exemple celles des moyens de réglage de vitesse. Il convient à cette fin de faire en sorte, comme cela est connu en soi, que la section transversale de passage du fluide sous pression soit variable.It should be noted in the context of the present invention, that the bars can be used as a support member for an additional device and / or to serve as a tube incorporated in the pressurized fluid supply system, of the jack, like this is illustrated in Figures 5 to 7. In addition, the fixing screws can perform in addition to their actual fixing function, additional functions such as for example those of the speed adjustment means. To this end, it is necessary to ensure, as is known per se, that the cross section of passage of the pressurized fluid is variable.

Les vérins selon l'invention qui ont été décrits et représentés peuvent être modifiés de diverses manières sans quitter le cadre de l'invention. Ainsi les vérins peuvent être du type à simple effet. Les brides de piquage de contrôle peuvent être réglables.The cylinders according to the invention which have been described and shown can be modified in various ways without leaving the scope of the invention. Thus the cylinders can be of the single acting type. The control tapping flanges can be adjustable.

Claims (9)

1. Ram, particularly micro-ram, comprising a substantially cylindrical, hollow body (4) in which is movably mounted a piston (5) dividing the internal space of the said body (4) into two chambers of variable volume (6, 7) each of them being provided with a port (8) for fluid supply or fluid exhaust of the chamber (6 or 7), and a support device (2) of supplementary elements (3, 42), if necessary indicating a parameter of the ram functioning, such as bars (17) fixed on the external surface of the body (4), characterized in that the fixing means (20, 20') of the support device (2) are mounted in the feeding ports (8) and are formed by members likely to be introduced each one, notably screwed, in a feeding port (8), each member (20, 20') passed by a channel allowing the inlet of the forced fluid to the interior of the ram.
2. Ram according to claim 1, characterized in that the fixing member (20, 20') is formed a screw liable to be screwed in a threaded portion (21 ) of the feeding port (8).
3. Ram according to claim 2, characterized in that the fixing screw (20) is provided with an axial channel (22) which entirely goes through it, the channel portion located in the head of the screw being shaped so as to constitute a connecting means.
4. Ram according to claim 3, characterized in that the connecting means is constituted by an instantaneous connection (26).
5. Ram according to claim 1, equipped with a support device comprising bars extending in parallel relation-ship to the axis of the rams, characterized in that at least one bar (17) is tubular and presents an axial channel communicating through a duct (38) provided in the corresponding support-bar (18') and the fixing means (20') with the feed port (8) of one of the chambers (6, 7) of the ram, to allow the feeding and the exhaust of the chambers (6, 7) from only one end of the ram.
6. Ram according to claim 5, characterized in that the fixing means (20, 20') advantageously formed by one screw, presents a transverse channel in line with the aforesaid duct (38) and communicating through an axial channel (20) with the feed port (8).
7. Ram according to one of the preceding claims, characterized in that the fixing means (20, 20') advantageously formed by screws, are arranged so as to allow a regulation of the speed of the piston (5).
8. Ram according to one of the preceding claims, characterized in that it comprises at least one control pick-up device (42) in form of a flange supported by the support device (2) and presenting a channel passage-way (43) in line with at least one hole (45) going through the ram body, the flange being liable to be regulated.
9. Ram according to one of the preceding claims, characterized in that the support device (2) is adapted to support a magnetic sensor (3) co-operating with a permanent magnet (12) associated with the piston (5).
EP84400942A 1983-05-10 1984-05-09 Ram, in particular a micro-ram, including a support device for mounting external supplementary elements Expired EP0125992B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84400942T ATE28351T1 (en) 1983-05-10 1984-05-09 HYDRAULIC ACTUATOR, PARTICULARLY MICRO CONSTRUCTION, WITH A BRACKET FOR ATTACHING ADDITIONAL ELEMENTS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8307821 1983-05-10
FR8307821A FR2545888B1 (en) 1983-05-10 1983-05-10 CYLINDER, ESPECIALLY MICROVERIN COMPRISING A DEVICE FOR SUPPORTING EXTERNAL EXTERNAL ELEMENTS

Publications (2)

Publication Number Publication Date
EP0125992A1 EP0125992A1 (en) 1984-11-21
EP0125992B1 true EP0125992B1 (en) 1987-07-15

Family

ID=9288764

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84400942A Expired EP0125992B1 (en) 1983-05-10 1984-05-09 Ram, in particular a micro-ram, including a support device for mounting external supplementary elements

Country Status (4)

Country Link
EP (1) EP0125992B1 (en)
AT (1) ATE28351T1 (en)
DE (1) DE3464788D1 (en)
FR (1) FR2545888B1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60263713A (en) * 1984-06-11 1985-12-27 Takashi Kimura Intermediate stop air pressure cylinder with reduction gear
DE3546865C2 (en) * 1985-03-01 1997-05-28 Festo Kg Piston-cylinder arrangement
DE3524414C2 (en) * 1985-04-16 1994-06-16 Mannesmann Ag linear actuator
JPH0419214Y2 (en) * 1986-01-21 1992-04-30
AT386656B (en) * 1986-04-01 1988-09-26 Hoerbiger Pneumatic Gmbh PRESSURE-OPERABLE WORKING CYLINDER
DE4338568C2 (en) * 1993-11-05 1997-05-22 Mannesmann Ag Device for querying positions on moving elements using sensors

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1436078A (en) * 1965-03-10 1966-04-22 Crouzet Sa Device allowing the adaptation of a four-way 5-port distributor to the rear of a cylinder that can be standardized
GB1350006A (en) * 1971-11-10 1974-04-18 Martonair Ltd Fluid operable position sensor
DE7502826U (en) * 1975-01-31 1975-08-28 Festo Maschinenfabrik Stoll G
US4230023A (en) * 1977-12-05 1980-10-28 Scovill Manufacturing Company Clamping apparatus
SE419787B (en) * 1978-05-03 1981-08-24 Hydro Pneumatic Ab WORKING CYLINDER WITH PISTON UNIT AND MAGNETIC PORTABLE INDICATOR
FR2442988A1 (en) * 1978-12-01 1980-06-27 Bbc Brown Boveri & Cie Expansion screw for components affected by heat - has sleeve made in one or two parts with threads engaging on threads of screw (NL 3.6.80)
FR2469595A1 (en) * 1979-11-13 1981-05-22 Jacottet Paul Ets IMPROVEMENT IN LOCKED CYLINDERS

Also Published As

Publication number Publication date
EP0125992A1 (en) 1984-11-21
FR2545888A1 (en) 1984-11-16
DE3464788D1 (en) 1987-08-20
ATE28351T1 (en) 1987-08-15
FR2545888B1 (en) 1987-07-17

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