EP0751304A2 - Pneumatic control system, elevating system and control system for a screwdriver - Google Patents

Pneumatic control system, elevating system and control system for a screwdriver Download PDF

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Publication number
EP0751304A2
EP0751304A2 EP96401256A EP96401256A EP0751304A2 EP 0751304 A2 EP0751304 A2 EP 0751304A2 EP 96401256 A EP96401256 A EP 96401256A EP 96401256 A EP96401256 A EP 96401256A EP 0751304 A2 EP0751304 A2 EP 0751304A2
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EP
European Patent Office
Prior art keywords
enclosure
cartridge
pyrotechnic
wall
cartridge holder
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.)
Withdrawn
Application number
EP96401256A
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German (de)
French (fr)
Other versions
EP0751304A3 (en
Inventor
Alain Grelier
Dominique Michel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Protac
Original Assignee
Protac
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Filing date
Publication date
Application filed by Protac filed Critical Protac
Publication of EP0751304A2 publication Critical patent/EP0751304A2/en
Publication of EP0751304A3 publication Critical patent/EP0751304A3/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/43—Pyrotechnical jacks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • B66F3/35—Inflatable flexible elements, e.g. bellows
    • 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
    • F15B15/10—Characterised by the construction of the motor unit the motor being of diaphragm type
    • F15B15/103—Characterised by the construction of the motor unit the motor being of diaphragm type using inflatable bodies that contract when fluid pressure is applied, e.g. pneumatic artificial muscles or McKibben-type actuators
    • 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
    • F15B15/19—Pyrotechnical actuators

Definitions

  • the invention relates to a pneumatic control system, its application to a lifting system such as a car jack as well as its application to the control of a pneumatic screwing / unscrewing device.
  • the mechanical jack currently used on vehicles is often a source of problems with its use by inexperienced people.
  • the system of the invention provides an adaptable system as well for unlocking the wheels of an automobile as for serving as a jack for changing a punctured wheel.
  • the object of the invention is to use an inflatable enclosure.
  • French Patent Application No. 2,265,666 describes an inflatable jack, but it requires a source of compressed air to inflate the enclosure. Such a source is not available on board an automobile and this jack cannot be used as an emergency jack for a driver.
  • the invention overcomes all these drawbacks.
  • the invention therefore relates to a pneumatic control system comprising an inflatable enclosure, characterized in that the enclosure is waterproof and is made of flexible and non-elastic material, and in that it comprises, fixed in the wall of the enclosure, a cartridge holder intended to receive in a sealed manner and in a fixed or removable manner a pyrotechnic cartridge so that the pyrotechnic charge is directed towards the interior of the enclosure.
  • This system is therefore applicable to a car jack.
  • the invention is applicable to a control system of a screwing / unscrewing device, characterized in that it also comprises, fixed in the wall of the enclosure, a mounting ring intended to receive in leaktight manner and fixed or removable way an outlet conduit connectable to the pneumatic control input of a pneumatic screwing / unscrewing device.
  • This system includes an enclosure made of flexible material and as gas tight as possible.
  • the wall of the enclosure has an access with, sealed, a pyrotechnic cartridge or a cartridge holder. It is capable of receiving a fixed or removable pyrotechnic cartridge.
  • the pyrotechnic cartridge mounted in the wall of the enclosure has an electrical connection system accessible from outside the enclosure and making it possible to cause an electrical spark in the cartridge by injection of a current, which triggers the ignition of the pyrotechnic powder charge.
  • the cartridge has a opening towards the interior of the enclosure.
  • the evolution of gas which occurs causes the inflation of the enclosure as shown in FIG. 1b.
  • the enclosure being made of non-elastic material, it acquires an appearance of rigidity with sufficient pressure. It can therefore be used for two possible functions either as a device to exert a force or as a reserve of compressed gas.
  • the first function will be applied in the description which follows in an elevator system and the second function will be applied in a screw / unscrew system.
  • a cartridge holder 3 is sealed in the wall of the enclosure 1.
  • the cartridge holder 3 is sealed in a reinforced area 30 of the enclosure.
  • a pyrotechnic cartridge instead of having a cartridge holder sealed in the wall of the enclosure, provision may be made for a pyrotechnic cartridge to be directly sealed.
  • the speaker can only be used once.
  • the cartridge holder 3 comprises means for mounting a pyrotechnic cartridge in a sealed manner.
  • the cartridge holder is then adapted to the cartridge 10 which it is to receive.
  • the mounting can be screw or snap-on and sealing can be done using seals such as O-rings.
  • the enclosure 1 has non-slip surfaces 2 intended to be in contact with the load to be lifted and the support piece (the ground in the case of a car jack). These non-slip surfaces can simply consist of a band surrounding the enclosure 1. In this way, by providing for the enclosure 1 an oval or cylindrical shape when it is inflated, the user can place the enclosure under the load to be lifted without being concerned with the orientation of the enclosure around the axis XX '.
  • the enclosure 1 can also be provided with a stand 4 which is connected at an upper point of the enclosure when it is inflated. So when the user inflates the enclosure, the stand 4 will be placed automatically vertically under the load so that in the event of an incident (deflating the enclosure), the lifted load is kept lifted by the stand.
  • the reinforced zone comprises a mounting ring 31 fixed in a sealed manner.
  • This mounting ring makes it possible to connect a screwdriver / unscrewer device with pneumatic control 6 using a conduit.
  • the user in the event of a puncture can inflate the enclosure for the first time by placing a cartridge in the cartridge holder 3 and by triggering the pyrotechnic charge.
  • the user connects the screwdriver / unscrewer 6 to the mounting ring 31. He can then release the fixing nuts of the wheel of the vehicle to be changed. Then, he places enclosure 1 under the vehicle. He re-inflates the enclosure using another pyrotechnic cartridge and thus lifts the vehicle. He can then change the punctured wheel.
  • the enclosure can be deflated by removing, for example, the cartridge 10.
  • FIG. 3a represents in section an example pyrotechnic cartridge.
  • the cartridge 10 has a cavity 13 filled with pyrotechnic powder.
  • a nozzle 12 is threaded to allow attachment in the cartridge holder 3 of the inflatable enclosure.
  • the cavity 13 can communicate through the nozzle 12 with the interior of the enclosure.
  • a seal 11 makes it possible to perfect the seal during the mounting of the cartridge in the cartridge holder 3.
  • the cartridge is provided with electrodes 16 allowing the ignition of the pyrotechnic powder. These electrodes are connected to electrical connection pins 15, 15 ′ of the connector 14 so that they can be connected to a source of electrical power such as a battery, the cigarette lighter socket of the vehicle or any other source. electric.
  • Figure 3b shows a cartridge holder in which the cartridge of Figure 3a can be mounted.
  • This cartridge holder therefore has a threaded hole 31 (or any other fixing means) for receiving the thread 12 of the cartridge.
  • a non-return valve 32 allows the gas from the cartridge to enter the enclosure but prevents the gas from leaving the enclosure unless the valve 32 is pressed.
  • the mounting ring 31 can be produced in a similar manner to the cartridge holder of FIG. 3b.
  • FIG. 3c represents the interior of the enclosure 1, in which walls 20, 21, etc. have been provided, acting as baffles inside the enclosure. These walls have the role of distributing the effect of the gas produced by the cartridge during inflation.
  • the invention may be intended to serve as a reserve of compressed gas.
  • it can be applied to the control of a pneumatic screwdriver / deflector.
  • FIG. 4 represents an exemplary embodiment of such a system. It comprises an enclosure 1 provided with a cartridge holder 3 (or with a cartridge) and a mounting ring 31 to which is fixed a conduit 32 connected to a screwing / unscrewing device 6 pneumatically controlled.
  • the enclosure can be produced using a canvas of material of the type known commercially under the name of Kevlar which has the characteristic of being flexible, waterproof but very inelastic.
  • This enclosure may or may not be disposable after use.

Abstract

The pneumatic actuator has an inflatable enclosure (1) made of a non-elastic supple material, for example Kevlar (RTM). The enclosure is sealed to gas. A pyrotechnic cartridge is fitted to a holder (3) attached to the wall and sealed access provided to the interior of the enclosure so the pyrotechnic discharge is directed into the enclosure. A valve at the access point ensures the pressure is preserved in the enclosure after the pyrotechnic cartridge is activated. The pyrotechnic cartridge has an electrical connector accessible from the exterior to allow activation of the pyrotechnic cartridge by an electric current.

Description

L'invention concerne un système de commande pneumatique, son application à un système élévateur tel qu'un cric de voiture ainsi que son application à la commande d'un appareil visseur/dévisseur pneumatique.The invention relates to a pneumatic control system, its application to a lifting system such as a car jack as well as its application to the control of a pneumatic screwing / unscrewing device.

Le cric mécanique actuellement utilisé sur les véhicules est souvent source de problèmes quant à son utilisation par des personnes non expérimentées.The mechanical jack currently used on vehicles is often a source of problems with its use by inexperienced people.

Les principaux inconvénients liés aux systèmes actuels sont les suivants :

  • 1 - Le placement dans le véhicule
  • 2 - La saleté due aux matières grasses dont le matériel est imprégné (indispensable pour le bon fonctionnement)
  • 3 - La mise en oeuvre
  • 4 - Les efforts à déployer nécessaires pour par exemple soulever les véhicules et débloquer les boulons de roues
  • 5 - La nature des terrains de mise en oeuvre (terrain uniforme et peu pentu).
The main disadvantages of current systems are:
  • 1 - Placement in the vehicle
  • 2 - Dirt due to fatty substances in which the material is impregnated (essential for proper functioning)
  • 3 - The implementation
  • 4 - The efforts to be deployed, for example to lift the vehicles and unlock the wheel bolts
  • 5 - The nature of the fields of implementation (uniform and slightly sloping ground).

Ce matériel qui demeure rustique et peu cher n'en demeure pas moins un mauvais produit qui rebute bon nombre d'utilisateurs potentiels quant à son utilisation (femmes, personnes âgées, etc).This material which remains rustic and inexpensive nonetheless remains a bad product which puts off a good number of potential users as for its use (women, old people, etc).

De même, les roues d'une automobile sont souvent bloquées à l'excès. En cas de crevaison, leur déblocage est souvent source de "tours de reins" et problématique pour nombre de conducteurs.Likewise, the wheels of an automobile are often locked to excess. In the event of a puncture, unlocking them is often a source of "backache" and problematic for many drivers.

Le système de l'invention fournit un système adaptable tout aussi bien pour débloquer les roues d'une automobile que pour servir de cric en vue de changer une roue crevée.The system of the invention provides an adaptable system as well for unlocking the wheels of an automobile as for serving as a jack for changing a punctured wheel.

L'invention a pour objet d'utiliser une enceinte gonflable.The object of the invention is to use an inflatable enclosure.

La Demande de Brevet français n° 2 265 666 décrit un cric gonflable, mais il nécessite une source d'air comprimé pour gonfler l'enceinte. Une telle source n'est pas disponible à bord d'une automobile et ce cric ne peut servir de cric de secours pour un conducteur.French Patent Application No. 2,265,666 describes an inflatable jack, but it requires a source of compressed air to inflate the enclosure. Such a source is not available on board an automobile and this jack cannot be used as an emergency jack for a driver.

L'invention permet de résoudre tous ces inconvénients.The invention overcomes all these drawbacks.

L'invention concerne donc un système de commande pneumatique comprenant une enceinte gonflable, caractérisé en ce que l'enceinte est étanche et est en matériau souple et non élastique, et en ce qu'il comporte, fixé dans la paroi de l'enceinte, un porte-cartouche destiné à recevoir de manière étanche et de manière fixe ou amovible une cartouche pyrotechnique de façon que la charge pyrotechnique soit dirigée vers l'intérieur de l'enceinte.The invention therefore relates to a pneumatic control system comprising an inflatable enclosure, characterized in that the enclosure is waterproof and is made of flexible and non-elastic material, and in that it comprises, fixed in the wall of the enclosure, a cartridge holder intended to receive in a sealed manner and in a fixed or removable manner a pyrotechnic cartridge so that the pyrotechnic charge is directed towards the interior of the enclosure.

Ce système est donc applicable à un cric de voiture.This system is therefore applicable to a car jack.

De plus l'invention est applicable à un système de commande d'un appareil visseur/dévisseur, caractérisé en ce qu'il comporte également, fixé dans la paroi de l'enceinte, une bague de montage destinée à recevoir de manière étanche et de manière fixe ou amovible un conduit de sortie raccordable à l'entrée de commande pneumatique d'un appareil visseur/dévisseur pneumatique.In addition, the invention is applicable to a control system of a screwing / unscrewing device, characterized in that it also comprises, fixed in the wall of the enclosure, a mounting ring intended to receive in leaktight manner and fixed or removable way an outlet conduit connectable to the pneumatic control input of a pneumatic screwing / unscrewing device.

Les différents objets et caractéristiques de l'invention apparaîtront plus clairement dans la description qui va suivre et dans les figures annexées qui représentent:

  • les figures 1a et 1b, un exemple de réalisation simplifié du système de l'invention ;
  • les figures 2a à 2c, un exemple d'application de l'invention à un élévateur tel qu'un cric d'automobile ;
  • les figures 3a à 3c, des vues de détails des dispositifs de la figure 2a ;
  • la figure 4, un exemple d'application de l'invention à un système visseur/dévisseur.
The various objects and characteristics of the invention will appear more clearly in the description which follows and in the appended figures which represent:
  • Figures 1a and 1b, a simplified embodiment of the system of the invention;
  • FIGS. 2a to 2c, an example of application of the invention to a lift such as a car jack;
  • Figures 3a to 3c, detailed views of the devices of Figure 2a;
  • Figure 4, an example of application of the invention to a screw / unscrew system.

En se reportant aux figures 1a et 1b, on va donc tout d'abord décrire un exemple général de réalisation du système de commande pneumatique selon l'invention. Ce système comporte une enceinte en matériau souple et le plus étanche possible au gaz.Referring to Figures 1a and 1b, we will therefore first describe a general embodiment of the pneumatic control system according to the invention. This system includes an enclosure made of flexible material and as gas tight as possible.

La paroi de l'enceinte comporte un accès avec, scellé de manière étanche, une cartouche pyrotechnique ou un porte-cartouche. Celui-ci est capable de recevoir de manière fixe ou amovible une cartouche pyrotechnique. La cartouche pyrotechnique montée dans la paroi de l'enceinte possède un système de connexion électrique accessible de l'extérieur de l'enceinte et permettant de provoquer une étincelle électrique dans la cartouche par injection d'un courant, ce qui déclenche l'inflammation de la charge de poudre pyrotechnique. La cartouche comporte une ouverture vers l'intérieur de l'enceinte. Ainsi, lors de l'inflammation de la poudre, le dégagement de gaz qui se produit provoque le gonflage de l'enceinte comme représenté en figure 1b. L'enceinte étant en matériau non élastique, elle acquiert avec une pression suffisante un aspect de rigidité. Elle peut donc être utilisée pour deux fonctions possibles soit comme dispositif pour exercer une force, soit comme réserve de gaz comprimé.The wall of the enclosure has an access with, sealed, a pyrotechnic cartridge or a cartridge holder. It is capable of receiving a fixed or removable pyrotechnic cartridge. The pyrotechnic cartridge mounted in the wall of the enclosure has an electrical connection system accessible from outside the enclosure and making it possible to cause an electrical spark in the cartridge by injection of a current, which triggers the ignition of the pyrotechnic powder charge. The cartridge has a opening towards the interior of the enclosure. Thus, during the ignition of the powder, the evolution of gas which occurs causes the inflation of the enclosure as shown in FIG. 1b. The enclosure being made of non-elastic material, it acquires an appearance of rigidity with sufficient pressure. It can therefore be used for two possible functions either as a device to exert a force or as a reserve of compressed gas.

La première fonction sera appliquée dans la description qui va suivre dans un système élévateur et la deuxième fonction sera appliquée dans un système visseur/dévisseur.The first function will be applied in the description which follows in an elevator system and the second function will be applied in a screw / unscrew system.

En se reportant aux figures 2a à 2c, on va donc décrire une application de l'invention à un système élévateur.Referring to Figures 2a to 2c, we will therefore describe an application of the invention to a lifting system.

On retrouve l'enceinte gonflable 1 en matériau étanche et non élastique. Un porte-cartouche 3 est scellé dans la paroi de l'enceinte 1. De préférence, le porte-cartouche 3 est scellé dans une zone renforcée 30 de l'enceinte.We find the inflatable enclosure 1 in waterproof and non-elastic material. A cartridge holder 3 is sealed in the wall of the enclosure 1. Preferably, the cartridge holder 3 is sealed in a reinforced area 30 of the enclosure.

Selon une variante de réalisation non représentée, au lieu d'avoir un porte-cartouche scellé dans la paroi de l'enceinte, on peut prévoir que ce soit une cartouche pyrotechnique qui soit directement scellée. L'enceinte n'est alors utilisable qu'une seule fois.According to an alternative embodiment, not shown, instead of having a cartridge holder sealed in the wall of the enclosure, provision may be made for a pyrotechnic cartridge to be directly sealed. The speaker can only be used once.

Le porte-cartouche 3 comporte des moyens pour monter une cartouche pyrotechnique de façon étanche. Le porte-cartouche est alors adapté à la cartouche 10 qu'il doit recevoir. Le montage peut être à vis ou par encliquetage et l'étanchéité peut se faire à l'aide de joints tels que des joints toriques.The cartridge holder 3 comprises means for mounting a pyrotechnic cartridge in a sealed manner. The cartridge holder is then adapted to the cartridge 10 which it is to receive. The mounting can be screw or snap-on and sealing can be done using seals such as O-rings.

L'enceinte 1 comporte des surfaces antidérapantes 2 prévues pour être en contact avec la charge à soulever et la pièce d'appui (le sol dans le cas d'un cric de voiture). Ces surfaces antidérapantes peuvent de façon simple être constituées d'une bande entourant l'enceinte 1. De cette façon, en prévoyant pour l'enceinte 1 une forme ovale ou cylindrique lorsqu'elle est gonflée, l'utilisateur peut placer l'enceinte sous la charge à soulever sans se préoccuper de l'orientation de l'enceinte autour de l'axe XX'.The enclosure 1 has non-slip surfaces 2 intended to be in contact with the load to be lifted and the support piece (the ground in the case of a car jack). These non-slip surfaces can simply consist of a band surrounding the enclosure 1. In this way, by providing for the enclosure 1 an oval or cylindrical shape when it is inflated, the user can place the enclosure under the load to be lifted without being concerned with the orientation of the enclosure around the axis XX '.

L'enceinte 1 peut également être munie d'une béquille 4 qui est reliée en un point supérieur de l'enceinte lorsqu'elle est gonflée. Ainsi lorsque l'utilisateur gonflera l'enceinte, la béquille 4 se placera automatiquement verticalement sous la charge de façon qu'en cas d'incident (dégonflage de l'enceinte), la charge soulevée soit maintenue soulevée par la béquille.The enclosure 1 can also be provided with a stand 4 which is connected at an upper point of the enclosure when it is inflated. So when the user inflates the enclosure, the stand 4 will be placed automatically vertically under the load so that in the event of an incident (deflating the enclosure), the lifted load is kept lifted by the stand.

Selon une variante de réalisation, la zone renforcée comporte une bague de montage 31 fixée de manière étanche. Cette bague de montage permet de brancher un appareil visseur/dévisseur à commande pneumatique 6 à l'aide d'un conduit.According to an alternative embodiment, the reinforced zone comprises a mounting ring 31 fixed in a sealed manner. This mounting ring makes it possible to connect a screwdriver / unscrewer device with pneumatic control 6 using a conduit.

Ainsi si le système élévateur est un cric de voiture, l'utilisateur en cas de crevaison peut gonfler une première fois l'enceinte en plaçant une cartouche dans le porte-cartouche 3 et en déclenchant la charge pyrotechnique. L'utilisateur branche le visseur/dévisseur 6 à la bague de montage 31. ll peut alors débloquer les écrous de fixation de la roue du véhicule à changer. Ensuite, il place l'enceinte 1 sous le véhicule. Il regonfle l'enceinte à l'aide d'une autre cartouche pyrotechnique et soulève ainsi le véhicule. Il peut alors changer la roue crevée.Thus if the lifting system is a car jack, the user in the event of a puncture can inflate the enclosure for the first time by placing a cartridge in the cartridge holder 3 and by triggering the pyrotechnic charge. The user connects the screwdriver / unscrewer 6 to the mounting ring 31. He can then release the fixing nuts of the wheel of the vehicle to be changed. Then, he places enclosure 1 under the vehicle. He re-inflates the enclosure using another pyrotechnic cartridge and thus lifts the vehicle. He can then change the punctured wheel.

La nouvelle roue étant mise en place et fixée, l'enceinte peut être dégonflée en enlevant par exemple la cartouche 10.The new wheel being put in place and fixed, the enclosure can be deflated by removing, for example, the cartridge 10.

La figure 3a représente en coupe un exemple cartouche pyrotechnique. La cartouche 10 comporte une cavité 13 remplie de poudre pyrotechnique. Un embout 12 est fileté pour permettre une fixation dans le porte-cartouche 3 de l'enceinte gonflable. La cavité 13 peut communiquer par l'embout 12 avec l'intérieur de l'enceinte. Un joint 11 permet de parfaire l'étanchéité lors du montage de la cartouche dans le porte-cartouche 3. Enfin, la cartouche est munie d'électrodes 16 permettant la mise à feu de la poudre pyrotechnique. Ces électrodes sont connectées à des broches de connexion électriques 15, 15' du connecteur 14 de façon à pouvoir les connecter à une source d'alimentation électrique telle qu'une pile, la prise de l'allume-cigares du véhicule ou toute autre source électrique.FIG. 3a represents in section an example pyrotechnic cartridge. The cartridge 10 has a cavity 13 filled with pyrotechnic powder. A nozzle 12 is threaded to allow attachment in the cartridge holder 3 of the inflatable enclosure. The cavity 13 can communicate through the nozzle 12 with the interior of the enclosure. A seal 11 makes it possible to perfect the seal during the mounting of the cartridge in the cartridge holder 3. Finally, the cartridge is provided with electrodes 16 allowing the ignition of the pyrotechnic powder. These electrodes are connected to electrical connection pins 15, 15 ′ of the connector 14 so that they can be connected to a source of electrical power such as a battery, the cigarette lighter socket of the vehicle or any other source. electric.

La figure 3b représente un porte-cartouche dans lequel peut être montée la cartouche de la figure 3a. Ce porte-cartouche comporte donc un trou fileté 31 (ou tout autre moyen de fixation) pour recevoir le filetage 12 de la cartouche. Un clapet anti-retour 32 permet au gaz de la cartouche de pénétrer dans l'enceinte mais empêche le gaz de ressortir de l'enceinte sauf à appuyer sur le clapet 32.Figure 3b shows a cartridge holder in which the cartridge of Figure 3a can be mounted. This cartridge holder therefore has a threaded hole 31 (or any other fixing means) for receiving the thread 12 of the cartridge. A non-return valve 32 allows the gas from the cartridge to enter the enclosure but prevents the gas from leaving the enclosure unless the valve 32 is pressed.

La bague de montage 31 peut être réalisée de manière similaire au porte-cartouche de la figure 3b.The mounting ring 31 can be produced in a similar manner to the cartridge holder of FIG. 3b.

La figure 3c représente l'intérieur de l'enceinte 1, dans laquelle on a prévu des parois 20, 21, ... faisant office de chicanes à l'intérieur de l'enceinte. Ces parois ont pour rôle de répartir l'effet du gaz produit par la cartouche lors du gonflage.FIG. 3c represents the interior of the enclosure 1, in which walls 20, 21, etc. have been provided, acting as baffles inside the enclosure. These walls have the role of distributing the effect of the gas produced by the cartridge during inflation.

Enfin, l'invention peut être destinée à servir de réserve de gaz comprimé. Par exemple, elle peut être appliquée à la commande d'un visseur/dévisseur pneumatique.Finally, the invention may be intended to serve as a reserve of compressed gas. For example, it can be applied to the control of a pneumatic screwdriver / deflector.

La figure 4 représente un exemple de réalisation d'un tel système. Il comporte une enceinte 1 munie d'un porte-cartouche 3 (ou d'une cartouche) et d'une bague de montage 31 à laquelle est fixé un conduit 32 reliée à un appareil de vissage/dévissage 6 à commande pneumatique.FIG. 4 represents an exemplary embodiment of such a system. It comprises an enclosure 1 provided with a cartridge holder 3 (or with a cartridge) and a mounting ring 31 to which is fixed a conduit 32 connected to a screwing / unscrewing device 6 pneumatically controlled.

A titre d'exemple, on précise que l'enceinte peut être réalisée à l'aide d'une toile en matériau du type connu commercialement sous le nom de Kevlar qui présente la caractéristique d'être souple, étanche mais très peu élastique.By way of example, it is specified that the enclosure can be produced using a canvas of material of the type known commercially under the name of Kevlar which has the characteristic of being flexible, waterproof but very inelastic.

Cette enceinte pourra être jetable ou non après utilisation. Par exemple, elle pourra se présenter sous la forme d'une baudruche parallélépipédique de dimensions extérieures I = 10 cm, L = 40 cm, hauteur = 1 à 2 cm en configuration de stockage.This enclosure may or may not be disposable after use. For example, it could be in the form of a rectangular bladder with external dimensions I = 10 cm, L = 40 cm, height = 1 to 2 cm in storage configuration.

Claims (19)

Système de commande pneumatique comprenant une enceinte gonflable, caractérisé en ce que l'enceinte (1) est étanche et est en matériau souple et non élastique, et en ce qu'il comporte, fixé de manière étanche dans la paroi de l'enceinte, une cartouche ou un porte-cartouche (3) destiné à recevoir de manière étanche et de manière fixe ou amovible une cartouche pyrotechnique de façon que la charge pyrotechnique soit dirigée vers l'intérieur de l'enceinte.Pneumatic control system comprising an inflatable enclosure, characterized in that the enclosure (1) is sealed and is made of flexible and non-elastic material, and in that it comprises, fixed in a sealed manner in the wall of the enclosure, a cartridge or a cartridge holder (3) intended to receive in a sealed manner and in a fixed or removable manner a pyrotechnic cartridge so that the pyrotechnic charge is directed towards the interior of the enclosure. Système élévateur appliquant le système de commande pneumatique selon la revendication 1.Lift system applying the pneumatic control system according to claim 1. Système de commande d'un appareil visseur/dévisseur appliquant le système selon la revendication 1, caractérisé en ce qu'il comporte également, fixé dans la paroi de l'enceinte, une bague de montage (31) destinée à recevoir de manière étanche et de manière fixe ou amovible un conduit de sortie (9) raccordable à l'entrée de commande pneumatique d'un appareil visseur/dévisseur pneumatique (6).Control system of a screwing / unscrewing device applying the system according to claim 1, characterized in that it also comprises, fixed in the wall of the enclosure, a mounting ring (31) intended to receive in sealed manner and fixedly or removably an outlet duct (9) connectable to the pneumatic control input of a pneumatic screwdriver / unscrewer (6). Système selon la revendication 1, caractérisé en ce que le porte-cartouche (3) permet un montage par vissage ou par encliquetage d'une cartouche pyrotechnique (10).System according to claim 1, characterized in that the cartridge holder (3) allows mounting by screwing or snap-fastening of a pyrotechnic cartridge (10). Système selon la revendication 4, caractérisé en ce que la cartouche (10) est montée de façon étanche dans le porte-cartouche à l'aide d'un joint torique.System according to claim 4, characterized in that the cartridge (10) is mounted in a sealed manner in the cartridge holder by means of an O-ring. Système selon la revendication 4, caractérisé en ce que le porte-cartouche (3) comporte une valve (32) conservant la pression dans l'enceinte lorsqu'on retire la cartouche.System according to claim 4, characterized in that the cartridge holder (3) comprises a valve (32) retaining the pressure in the enclosure when the cartridge is removed. Système selon la revendication 2, caractérisé en ce qu'il comporte également, fixé dans la paroi de l'enceinte, une bague de montage (31) destinée à recevoir de manière étanche et de manière fixe ou amovible un conduit de sortie (9) raccordable à l'entrée de commande pneumatique d'un appareil visseur/dévisseur pneumatique (6).System according to claim 2, characterized in that it also comprises, fixed in the wall of the enclosure, a mounting ring (31) intended to receive in leaktight manner and in a fixed or removable manner an outlet duct (9) connectable to the pneumatic control input of a pneumatic screwdriver / unscrewer (6). Système selon l'une des revendications 1 ou 7, caractérisé en ce que la paroi extérieure de l'enceinte comporte une zone renforcée (30) dans laquelle est scellé le porte-cartouche (3) et éventuellement la bague de montage (31).System according to one of claims 1 or 7, characterized in that the outer wall of the enclosure has a reinforced zone (30) in which the cartridge holder (3) and possibly the mounting ring (31) are sealed. Système selon la revendication 1, caractérisé en ce que l'enceinte (1) se présente sous la forme d'un sac en matériau du type Kevlar.System according to claim 1, characterized in that the enclosure (1) is in the form of a bag made of material of the Kevlar type. Système selon la revendication 2, caractérisé en ce que la paroi extérieure de l'enceinte comporte des zones (2) en matériau antidérapant destinées à être en contact avec le sol et/ou l'objet à soulever.System according to claim 2, characterized in that the external wall of the enclosure comprises zones (2) of non-slip material intended to be in contact with the ground and / or the object to be lifted. Système selon la revendication 10, caractérisé en ce que le matériau antidérapant constitue une bande entourant l'enceinte.System according to claim 10, characterized in that the non-slip material constitutes a strip surrounding the enclosure. Système selon la revendication 1, caractérisé en ce qu'il comporte une quille rigide (4) possédant une extrémité reliée à la partie supérieure de l'enceinte de façon à ce que cette extrémité s'élève lors du gonflage de l'enceinte et que la quille (4) adopte une position verticale entre l'objet à soulever et le sol.System according to claim 1, characterized in that it comprises a rigid keel (4) having one end connected to the upper part of the enclosure so that this end rises during inflation of the enclosure and that the keel (4) assumes a vertical position between the object to be lifted and the ground. Système selon l'une des revendications 3 ou 7, caractérisé en ce que la bague de montage (31) permet un montage par vissage ou par encliquetage du conduit de sortie.System according to one of claims 3 or 7, characterized in that the mounting ring (31) allows mounting by screwing or snap-fastening of the outlet duct. Système selon la revendication 13, caractérisé en ce que le conduit de sortie (9, 32) est monté de façon étanche dans la bague de montage (31) à l'aide d'un joint torique.System according to claim 13, characterized in that the outlet pipe (9, 32) is mounted in a sealed manner in the mounting ring (31) using an O-ring. Système selon la revendication 13, caractérisé en ce que la bague de montage comporte une valve conservant la pression dans l'enceinte lorsqu'on retire le conduit de sortie.System according to claim 13, characterized in that the mounting ring includes a valve which maintains the pressure in the enclosure when the outlet duct is removed. Système selon la revendication 1, caractérisé en ce qu'il comporte un dispositif de dégonflage monté dans la paroi de l'enceinte.System according to claim 1, characterized in that it comprises a deflation device mounted in the wall of the enclosure. Système selon la revendication 1, caractérisé en ce que la cartouche pyrotechnique possède un connecteur électrique (14) accessible de l'extérieur lorsque la cartouche est montée dans le porte-cartouche et permettant de lui connecter une source électrique pour le déclenchement de la charge pyrotechnique.System according to claim 1, characterized in that the pyrotechnic cartridge has an electrical connector (14) accessible from the outside when the cartridge is mounted in the cartridge holder and making it possible to connect an electric source for triggering the pyrotechnic charge . Système selon la revendication 1, caractérisé en ce que l'intérieur de l'enceinte possède des chicanes (20, 21) permettant de répartir le déplacement du gaz de gonflage dans l'enceinte.System according to claim 1, characterized in that the interior of the enclosure has baffles (20, 21) making it possible to distribute the displacement of the inflation gas in the enclosure. Système selon la revendication 1, caractérisé en ce que l'enceinte (1) est, lorsqu'elle est gonflée, de forme générale circulaire de révolution telle que cylindrique ou ovale.System according to claim 1, characterized in that the enclosure (1) is, when inflated, of generally circular shape of revolution such as cylindrical or oval.
EP96401256A 1995-06-16 1996-06-11 Pneumatic control system, elevating system and control system for a screwdriver Withdrawn EP0751304A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9507226 1995-06-16
FR9507226A FR2735538B1 (en) 1995-06-16 1995-06-16 PNEUMATIC CONTROL SYSTEM, ELEVATOR SYSTEM AND CONTROL SYSTEM FOR A SCREWDRIVER / DEVICE DEVICE

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EP0751304A2 true EP0751304A2 (en) 1997-01-02
EP0751304A3 EP0751304A3 (en) 1999-08-11

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FR (1) FR2735538B1 (en)

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EP1270960A3 (en) * 2001-06-18 2004-01-02 TRW Occupant Restraint Systems GmbH & Co. KG Actuating device for a safety system
DE102007062602A1 (en) * 2007-12-22 2009-06-25 Diehl Bgt Defence Gmbh & Co. Kg Lifting equipment for lifting a load, in particular as part of emergency equipment for salvage purposes
EP2601127B1 (en) * 2010-08-04 2014-07-23 Abs Materials, Inc. Method and system for applying force against a solid object using a swellable sol-gel derived material

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1270960A3 (en) * 2001-06-18 2004-01-02 TRW Occupant Restraint Systems GmbH & Co. KG Actuating device for a safety system
US6942251B2 (en) 2001-06-18 2005-09-13 Trw Occupant Restraint Systems Gmbh & Co. Kg Actuating device for a safety means
US7083023B2 (en) 2001-06-18 2006-08-01 Trw Occupant Restraint Systems Gmbh & Co. Kg Actuating device for a safety means
DE102007062602A1 (en) * 2007-12-22 2009-06-25 Diehl Bgt Defence Gmbh & Co. Kg Lifting equipment for lifting a load, in particular as part of emergency equipment for salvage purposes
EP2072451A3 (en) * 2007-12-22 2009-12-16 Diehl BGT Defence GmbH & Co.KG Lifting device to lift a load, especially as part of emergency equipment for rescue purposes
EP2601127B1 (en) * 2010-08-04 2014-07-23 Abs Materials, Inc. Method and system for applying force against a solid object using a swellable sol-gel derived material

Also Published As

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EP0751304A3 (en) 1999-08-11
FR2735538A1 (en) 1996-12-20
FR2735538B1 (en) 1997-07-25

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