EP0922902A1 - Coupling for compressed gas fastening tool and a compressed gas cartridge - Google Patents

Coupling for compressed gas fastening tool and a compressed gas cartridge Download PDF

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Publication number
EP0922902A1
EP0922902A1 EP98402916A EP98402916A EP0922902A1 EP 0922902 A1 EP0922902 A1 EP 0922902A1 EP 98402916 A EP98402916 A EP 98402916A EP 98402916 A EP98402916 A EP 98402916A EP 0922902 A1 EP0922902 A1 EP 0922902A1
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EP
European Patent Office
Prior art keywords
compressed gas
male
connector
sealing means
cartridge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98402916A
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German (de)
French (fr)
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EP0922902B1 (en
Inventor
Bruno Toulouse
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Societe de Prospection et dInventions Techniques SPIT SAS
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Societe de Prospection et dInventions Techniques SPIT SAS
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0326—Valves electrically actuated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0382—Constructional details of valves, regulators

Definitions

  • a piston buffer fixture powered by compressed gas is supplied with compressed gas, generally consisting of a mixture of butane and propane, from a fuel cartridge containing, in an inner envelope, the compressed gas in the liquid state, called "fuel" by those skilled in the art.
  • the cartridge contains, between the inner envelope and an outer envelope, a propellant consisting of a mixture of nitrogen, butane and propane to the gaseous state and also intended to maintain the fuel in the liquid state.
  • a male ejection nozzle is connected to the inner casing and projects out of the outer envelope.
  • certain fixing devices include a solenoid valve with a female inlet nozzle compressed gas, with integrated seal, arranged to receive the nozzle male ejection of the fuel cartridge, the seal being intended for seal the connection between the two ends.
  • the solenoid valve is opened for a period determined and, the inlet nozzle of the solenoid valve having a cross section determined, the fuel is thus metered.
  • the seal should be changed regularly sealing the solenoid valve-cartridge connection. Now it turns out that changing such a seal is a complicated operation which, in practice, is never performed.
  • the invention proposes to facilitate the operation consisting in changing the seal. seal of the connection between the fuel cartridge and the solenoid valve compressed gas inlet into the appliance.
  • the invention relates to a connector for, on the one hand, a nozzle.
  • male ejection of a fuel cartridge intended to supply gas compressed a compressed gas fastener and, on the other hand, a inlet nozzle of a compressed gas inlet device in the apparatus comprising sealing means intended to ensure the tightness of the connection between the two end pieces, characterized in that, the nozzle of the compressed gas intake device also being a male end piece, the connector includes a female seal holder arranged to receive the two male ends and the sealing means are arranged to extend on either side of the joint plane of the two male end pieces.
  • the invention therefore consists in having relocated the seal which is no longer integrated in the intake nozzle as in the prior art, but carried by a seal holder that can easily be changed with each change of fuel cartridge.
  • the invention relates to a connector intended to connect two end caps, comprising sealing means, characterized in that, the two end pieces being male, it comprises a female joint holder arranged to receive the two male ends and the sealing means are arranged to extend on either side of the joint plane of the two male end caps.
  • the sealing means may comprise a seal in the form of sleeve arranged to surround the two male end pieces.
  • the seal may include an internal groove for retaining leakage gas.
  • the sealing means may also include two seals O-rings respectively intended to surround the two male end pieces.
  • the seal holder is arranged to guide the two end pieces males so as to make them kiss each other.
  • the seal holder comprises fixing means on the fuel cartridge.
  • the fuel cartridge comprising a coping
  • the means for attachment may include at least two hooked legs arranged to be clipped onto the edge of the cartridge.
  • the invention also relates to an assembly comprising a cartridge. fuel and connection equipment such as that defined above, in which the connection equipment is integral with the cartridge of fuel.
  • a piston buffer fixing device powered by compressed gas includes a combustion chamber intended to be supplied with gas compressed from a fuel cartridge 20.
  • the connector is intended for connect a solenoid valve 30 for admitting the compressed gas into the combustion chamber of the fixing device and the gas cartridge tablet 20.
  • the cartridge 20, of generally cylindrical shape comprises, in a inner envelope, compressed gas in liquid state, called "fuel” by a person skilled in the art, and between the inner envelope and an envelope exterior, a propellant.
  • a circular coping 21 extends in the extension of the outer cylindrical wall of the cartridge 20, one end of it.
  • the solenoid valve 30, of generally cylindrical shape comprises a conduit intake 31 communicating, at one of its ends, with a nozzle intake 32, with interposition of a filter 33, and at its other end, with a metering chamber 34.
  • the solenoid valve 30 comprises also an exhaust duct 35, connected at one of its ends to an exhaust nozzle 36 and, at its other end, to the metering 34.
  • the intake 31 and exhaust 35 conduits open out in the metering chamber 34 respectively by two orifices arranged opposite each other.
  • a spring washer 37 integral with a sealing joint 38, is mounted at the interior of the metering chamber 34, by introducing its edge outer device in a slot in the inner wall of room 34.
  • the solenoid valve 30 further comprises an electromagnet 39 under the action from which the seal 38 can move from an intake position in an exhaust position, by slight deformation of the washer spring 37.
  • the obturator seal 38 closes the orifice of the exhaust duct 35 while the orifice of the intake duct 31 is released, and in the exhaust position, the obturator seal 38 closes the inlet duct opening 31 while the duct opening exhaust 35 is released.
  • the inlet end piece 32 of the solenoid valve is a male end piece surrounded by a socket here providing four lateral slots and intended to receive a chimney 3 of the connector, as will be explained later.
  • the connector comprises a female joint holder 1 intended to receive the end piece male ejection 23 of the fuel cartridge 20 and the nozzle male inlet 32 of the solenoid valve 30.
  • the seal holder 1 in one piece and made of plastic, has a base flat support 2, here substantially rectangular, supporting the chimney 3 housing a seal 11, open at both ends and extending along an axis 15 perpendicular to the support base 2, of a side of it.
  • the free end edge 4 of the chimney 3 is folded down right angle towards the inside of the chimney 3 and forms an opening passage of the inlet nozzle 32 of the solenoid valve 30, having a section substantially equal to that of the end piece 32.
  • the spacing between the two legs 5, 6 is substantially equal to the inside diameter of the coping 21 of the fuel cartridge 20.
  • the two legs 5, 6 are each provided, at their free end, with a hook intended to hang on the inner wall of the coping 21.
  • the support base 2 comprises two pairs of support fingers 7-10, extending in the plane of the base 2.
  • the two fingers 7-8 (9-10) of each pair are located on either side of the connecting end of one of the fixing legs 5, (6) with the base 2, beyond the plane in which extends leg 5 (6) relative to axis 15.
  • the seal 11 housed in the chimney 3 has here a form of sleeve and provides an internal groove 12 for leakage gas retention. Seal 11 is blocked between the folded free end edge 4 of the chimney 3 and a retaining ring 13 introduced into the chimney 3 by its opening at through the support base 2.
  • the retaining ring 13 comprises a wall internal 14 having a frustoconical portion flaring towards the outside of the chimney, intended to facilitate the guidance of the nozzle ejection 23 of the fuel cartridge 20 during its introduction in the chimney 3, and another portion 14 ', adjacent to the joint 11, of cylindrical shape, with a section substantially equal to that of the ejection nozzle 23, and intended to guide and maintain the nozzle 23.
  • the chimney 3 of the fitting is introduced into the socket 40 of the solenoid valve 30, until the free end edge of the sleeve 40 abuts against the support base 2 of the connector.
  • the intake nozzle male 32 of the solenoid valve 30 is guided in the chimney 3 by the edge folded end 4.
  • the obturator seal 38 of the solenoid valve 30 is in position of admission. In this position, compressed gas escapes from the fuel cartridge 20 through the ejection nozzle 23, enters the solenoid valve 30 by the inlet nozzle 32 and fills the chamber with dosage 34, after passing through the filter 33 and into the conduit admission 31.
  • the seal 11 seals the connection of the two end pieces 23, 32. In in case of a possible gas leak, it comes to lodge in the throat internal 12 of the seal which, in any case, is of limited volume.
  • the exhaust nozzle 36 is connected to the combustion.
  • the electromagnet 39 is actuated under the action of which the spring washer 37 slightly deforms by moving the obturator seal 38 from its intake position to its exhaust position.
  • the gas contained in the metering chamber 34 then escapes towards the nozzle exhaust 36, through the exhaust duct 35.
  • we stop the electromagnet 39 and the obturator seal returns to the intake position.
  • this causes the sealing gasket 38 in a back and forth movement, between its intake position and its exhaust position.
  • the seal seal 51 in the form of a sleeve, and the retaining ring 52 form a single piece.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Pens And Brushes (AREA)

Abstract

A coupling for connecting a male nozzle (23) on a compressed gas cartridge (20) to a gas apparatus (30) which also has a male intake nozzle (32) consists of a female holder shaped to receive both nozzles and seals (11). The seals are in the form of a single sleeve fitting over both nozzles and having an inner gas retaining groove. In a variant of the design the seal can comprise two toroid seals, and the holder is shaped to guide the two male nozzles so their open ends meet.

Description

Un appareil de fixation de tampon à piston propulsé par gaz comprimé est alimenté en gaz comprimé, constitué généralement d'un mélange de butane et de propane, à partir d'une cartouche de carburant contenant, dans une enveloppe intérieure, le gaz comprimé à l'état liquide, appelé "carburant" par l'homme de l'art. Outre le carburant, la cartouche contient, entre l'enveloppe intérieure et une enveloppe extérieure, un propulseur constitué d'un mélange d'azote, de butane et de propane à l'état gazeux et destiné aussi à maintenir le carburant à l'état liquide. Un embout d'éjection mâle est relié à l'enveloppe intérieure et fait saillie hors de l'enveloppe extérieure.A piston buffer fixture powered by compressed gas is supplied with compressed gas, generally consisting of a mixture of butane and propane, from a fuel cartridge containing, in an inner envelope, the compressed gas in the liquid state, called "fuel" by those skilled in the art. Besides the fuel, the cartridge contains, between the inner envelope and an outer envelope, a propellant consisting of a mixture of nitrogen, butane and propane to the gaseous state and also intended to maintain the fuel in the liquid state. A male ejection nozzle is connected to the inner casing and projects out of the outer envelope.

A chaque tir de tampon, une dose déterminée de gaz comprimé est injectée depuis la cartouche de carburant dans une chambre de combustion de l'appareil de fixation, le dosage n'étant maítrisé que si le gaz comprimé est dosé à l'état liquide.Each time a tampon is fired, a fixed dose of compressed gas is injected from the fuel cartridge into a combustion of the fixing device, the dosage being controlled only if the compressed gas is dosed in the liquid state.

Pour doser le gaz comprimé injecté dans la chambre de combustion, certains appareils de fixation, tels que celui du document EP-0775 553A1, comprennent une électrovanne comportant un embout femelle d'admission de gaz comprimé, avec joint intégré, agencé pour recevoir l'embout d'éjection mâle de la cartouche de carburant, le joint étant destiné à assurer l'étanchéité du raccord entre les deux embouts. Pour chaque injection de carburant, on ouvre l'électrovanne pendant une durée déterminée et, l'embout d'admission de l'électrovanne ayant une section déterminée, on dose ainsi le carburant. Pour prévenir les éventuelles fuites de carburant, il conviendrait de changer régulièrement le joint assurant l'étanchéité du raccord électrovanne-cartouche. Or, il s'avère que changer un tel joint est une opération compliquée qui, en pratique, n'est jamais effectuée.To dose the compressed gas injected into the combustion chamber, certain fixing devices, such as that of document EP-0775 553A1, include a solenoid valve with a female inlet nozzle compressed gas, with integrated seal, arranged to receive the nozzle male ejection of the fuel cartridge, the seal being intended for seal the connection between the two ends. For each fuel injection, the solenoid valve is opened for a period determined and, the inlet nozzle of the solenoid valve having a cross section determined, the fuel is thus metered. To prevent possible fuel leaks, the seal should be changed regularly sealing the solenoid valve-cartridge connection. Now it turns out that changing such a seal is a complicated operation which, in practice, is never performed.

L'invention propose de faciliter l'opération consistant à changer le joint d'étanchéité du raccord entre la cartouche de carburant et l'électrovanne d'admission du gaz comprimé dans l'appareil.The invention proposes to facilitate the operation consisting in changing the seal. seal of the connection between the fuel cartridge and the solenoid valve compressed gas inlet into the appliance.

A cet effet, l'invention concerne un raccord pour, d'une part, un embout d'éjection mâle d'une cartouche de carburant destinée à alimenter en gaz comprimé un appareil de fixation à gaz comprimé et, d'autre part, un embout d'admission d'un dispositif d'admission de gaz comprimé dans l'appareil, comportant des moyens d'étanchéité destinés à assurer l'étanchéité du raccord entre les deux embouts, caractérisé par le fait que, l'embout du dispositif d'admission de gaz comprimé étant également un embout mâle, le raccord comporte un porte-joint femelle agencé pour recevoir les deux embouts mâles et les moyens d'étanchéité sont agencés pour s'étendre de part et d'autre du plan de joint des deux embouts mâles.To this end, the invention relates to a connector for, on the one hand, a nozzle. male ejection of a fuel cartridge intended to supply gas compressed a compressed gas fastener and, on the other hand, a inlet nozzle of a compressed gas inlet device in the apparatus, comprising sealing means intended to ensure the tightness of the connection between the two end pieces, characterized in that, the nozzle of the compressed gas intake device also being a male end piece, the connector includes a female seal holder arranged to receive the two male ends and the sealing means are arranged to extend on either side of the joint plane of the two male end pieces.

L'invention consiste donc à avoir délocalisé le joint qui n'est plus intégré dans l'embout d'admission comme dans l'art antérieur, mais porté par un porte-joint que l'on peut sans difficulté changer à chaque changement de cartouche de carburant.The invention therefore consists in having relocated the seal which is no longer integrated in the intake nozzle as in the prior art, but carried by a seal holder that can easily be changed with each change of fuel cartridge.

En fait, l'invention concerne un raccord destiné à raccorder deux embouts, comprenant des moyens d'étanchéité, caractérisé par le fait que, les deux embouts étant mâles, il comprend un porte-joint femelle agencé pour recevoir les deux embouts mâles et les moyens d'étanchéité sont agencés pour s'étendre de part et d'autre du plan de joint des deux embouts mâles.In fact, the invention relates to a connector intended to connect two end caps, comprising sealing means, characterized in that, the two end pieces being male, it comprises a female joint holder arranged to receive the two male ends and the sealing means are arranged to extend on either side of the joint plane of the two male end caps.

Les moyens d'étanchéité peuvent comprendre un joint en forme de manchon agencé pour entourer les deux embouts mâles.The sealing means may comprise a seal in the form of sleeve arranged to surround the two male end pieces.

Dans ce cas, le joint peut comprendre un gorge interne de rétention de gaz de fuite.In this case, the seal may include an internal groove for retaining leakage gas.

Ainsi, en cas de fuite, seul un volume réduit de gaz est perdu.Thus, in the event of a leak, only a reduced volume of gas is lost.

Les moyens d'étanchéité peuvent également comprendre deux joints toriques respectivement destinés à entourer les deux embouts mâles.The sealing means may also include two seals O-rings respectively intended to surround the two male end pieces.

Avantageusement, le porte-joint est agencé pour guider les deux embouts mâles de façon à les faire s'aboucher l'un à l'autre.Advantageously, the seal holder is arranged to guide the two end pieces males so as to make them kiss each other.

Grâce à cela, il suffit d'introduire les deux embouts à raccorder dans le porte-joint pour les raccorder. Thanks to this, it suffices to introduce the two ends to be connected in the seal holder to connect them.

Avantageusement encore, le porte-joint comprend des moyens de fixation sur la cartouche de carburant.Advantageously also, the seal holder comprises fixing means on the fuel cartridge.

La cartouche de carburant comprenant une margelle, les moyens de fixation peuvent comprendre au moins deux jambes à crochet agencées pour être clipsées sur la margelle de la cartouche.The fuel cartridge comprising a coping, the means for attachment may include at least two hooked legs arranged to be clipped onto the edge of the cartridge.

L'invention concerne également un ensemble comprenant une cartouche de carburant et un équipement de raccord tel que celui défini ci-dessus, dans lequel l'équipement de raccord est solidaire de la cartouche de carburant.The invention also relates to an assembly comprising a cartridge. fuel and connection equipment such as that defined above, in which the connection equipment is integral with the cartridge of fuel.

L'invention sera mieux comprise à l'aide de la description suivante de différentes formes de réalisation du raccord de l'invention, en référence au dessin annexé sur lequel:

  • la figure 1 représente une vue en perspective d'une première forme de réalisation du raccord;
  • la figure 2 représente une vue de côté du raccord de la figure 1;
  • la figure 3 représente un vue en coupe du raccord de la figure 1 le long de la ligne III-III;
  • la figure 4 représente une vue en coupe du raccord de la figure 1 utilisé pour raccorder deux embouts ;
  • la figure 5 représente une vue en coupe d'une deuxième forme de réalisation du raccord utilisé pour raccorder deux embouts et
  • la figure 6 représente une vue en coupe d'une troisième forme de réalisation du raccord.
The invention will be better understood with the aid of the following description of various embodiments of the connector of the invention, with reference to the appended drawing in which:
  • Figure 1 shows a perspective view of a first embodiment of the connector;
  • Figure 2 shows a side view of the connector of Figure 1;
  • Figure 3 shows a sectional view of the connector of Figure 1 along line III-III;
  • Figure 4 shows a sectional view of the connector of Figure 1 used to connect two end pieces;
  • FIG. 5 represents a sectional view of a second embodiment of the connector used to connect two end pieces and
  • Figure 6 shows a sectional view of a third embodiment of the connector.

Un appareil de fixation de tampon à piston propulsé par gaz comprimé comprend une chambre de combustion destinée à être alimentée en gaz comprimé à partir d'une cartouche de carburant 20.A piston buffer fixing device powered by compressed gas includes a combustion chamber intended to be supplied with gas compressed from a fuel cartridge 20.

Dans l'exemple particulier de la description, le raccord est destiné à raccorder une électrovanne 30 d'admission du gaz comprimé dans la chambre de combustion de l'appareil de fixation et la cartouche de gaz comprimé 20.In the particular example of the description, the connector is intended for connect a solenoid valve 30 for admitting the compressed gas into the combustion chamber of the fixing device and the gas cartridge tablet 20.

La cartouche 20, de forme générale cylindrique, comprend, dans une enveloppe intérieure, le gaz comprimé à l'état liquide, appelé "carburant" par l'homme du métier, et, entre l'enveloppe intérieure et une enveloppe extérieure, un propulseur. Une margelle circulaire 21 s'étend dans le prolongement de la paroi cylindrique extérieure de la cartouche 20, à l'une des extrémités de celle-ci. Un embout d'éjection mâle 23, relié à l'enveloppe intérieure, fait saillie hors de la cartouche, par une embase 24 située au centre du cercle décrit par la margelle 21.The cartridge 20, of generally cylindrical shape, comprises, in a inner envelope, compressed gas in liquid state, called "fuel" by a person skilled in the art, and between the inner envelope and an envelope exterior, a propellant. A circular coping 21 extends in the extension of the outer cylindrical wall of the cartridge 20, one end of it. A male ejection nozzle 23, connected to the inner envelope, protruding from the cartridge, by a base 24 located in the center of the circle described by the coping 21.

L'électrovanne 30, de forme générale cylindrique, comprend un conduit d'admission 31 communiquant, à l'une de ses extrémités, avec un embout d'admission 32, avec interposition d'un filtre 33, et, à son autre extrémité, avec une chambre de dosage 34. L'électrovanne 30 comporte également un conduit d'échappement 35, relié à l'une de ses extrémités à un embout d'échappement 36 et, à son autre extrémité, à la chambre de dosage 34. Les conduits d'admission 31 et d'échappement 35 débouchent dans la chambre de dosage 34 respectivement par deux orifices disposés en regard l'un de l'autre.The solenoid valve 30, of generally cylindrical shape, comprises a conduit intake 31 communicating, at one of its ends, with a nozzle intake 32, with interposition of a filter 33, and at its other end, with a metering chamber 34. The solenoid valve 30 comprises also an exhaust duct 35, connected at one of its ends to an exhaust nozzle 36 and, at its other end, to the metering 34. The intake 31 and exhaust 35 conduits open out in the metering chamber 34 respectively by two orifices arranged opposite each other.

Un rondelle ressort 37, solidaire d'un joint obturateur 38, est montée à l'intérieur de la chambre de dosage 34, par introduction de son bord périphérique extérieur dans une fente ménagée dans la paroi intérieure de la chambre 34.A spring washer 37, integral with a sealing joint 38, is mounted at the interior of the metering chamber 34, by introducing its edge outer device in a slot in the inner wall of room 34.

L'électrovanne 30 comprend en outre un électro-aimant 39 sous l'action duquel le joint obturateur 38 peut se déplacer d'une position d'admission à une position d'échappement, par légère déformation de la rondelle ressort 37. En position d'admission, le joint obturateur 38 obture l'orifice du conduit d'échappement 35 alors que l'orifice du conduit d'admission 31 est dégagé, et en position d'échappement, le joint obturateur 38 obture l'orifice du conduit d'admission 31 alors que l'orifice du conduit d'échappement 35 est dégagé.The solenoid valve 30 further comprises an electromagnet 39 under the action from which the seal 38 can move from an intake position in an exhaust position, by slight deformation of the washer spring 37. In the intake position, the obturator seal 38 closes the orifice of the exhaust duct 35 while the orifice of the intake duct 31 is released, and in the exhaust position, the obturator seal 38 closes the inlet duct opening 31 while the duct opening exhaust 35 is released.

L'embout d'admission 32 de l'électrovanne est un embout mâle entouré par une douille ménageant ici quatre fentes latérales et destinée à recevoir une cheminée 3 du raccord, comme cela sera explicité plus loin.The inlet end piece 32 of the solenoid valve is a male end piece surrounded by a socket here providing four lateral slots and intended to receive a chimney 3 of the connector, as will be explained later.

Le raccord comprend un porte-joint femelle 1 destiné à recevoir l'embout d'éjection mâle 23 de la cartouche de carburant 20 et l'embout d'admission mâle 32 de l'électrovanne 30. The connector comprises a female joint holder 1 intended to receive the end piece male ejection 23 of the fuel cartridge 20 and the nozzle male inlet 32 of the solenoid valve 30.

Le porte-joint 1, monobloc et en matière plastique, comporte une base d'appui plane 2, ici sensiblement rectangulaire, supportant la cheminée 3 de logement d'un joint d'étanchéité 11, ouverte à ses deux extrémités et s'étendant le long d'un axe 15 perpendiculaire à la base d'appui 2, d'un côté de celle-ci. Le bord 4 d'extrémité libre de la cheminée 3 est rabattu à angle droit vers l'intérieur de la cheminée 3 et forme une ouverture de passage de l'embout d'admission 32 de l'électrovanne 30, ayant une section sensiblement égale à celle de l'embout 32.The seal holder 1, in one piece and made of plastic, has a base flat support 2, here substantially rectangular, supporting the chimney 3 housing a seal 11, open at both ends and extending along an axis 15 perpendicular to the support base 2, of a side of it. The free end edge 4 of the chimney 3 is folded down right angle towards the inside of the chimney 3 and forms an opening passage of the inlet nozzle 32 of the solenoid valve 30, having a section substantially equal to that of the end piece 32.

Deux jambes de fixation 5, 6, reliées à la base d'appui 2 à l'une de leurs extrémités et symétriques l'une de l'autre par rapport à l'axe 15, s'étendent dans deux plans parallèles entre eux et perpendiculaires à la base d'appui 2, du côté opposé à celui de la cheminée 3. L'écartement entre les deux jambes 5, 6 est sensiblement égal au diamètre intérieur- de la margelle 21 de la cartouche de carburant 20. En outre, les deux jambes 5, 6 sont chacune pourvues, à leur extrémité libre, d'un crochet destiné à venir s'accrocher sur la paroi intérieure de la margelle 21.Two fixing legs 5, 6, connected to the support base 2 at one of their ends and symmetrical to each other with respect to axis 15, extend in two planes parallel to each other and perpendicular to the support base 2, on the opposite side from that of the chimney 3. The spacing between the two legs 5, 6 is substantially equal to the inside diameter of the coping 21 of the fuel cartridge 20. In addition, the two legs 5, 6 are each provided, at their free end, with a hook intended to hang on the inner wall of the coping 21.

La base d'appui 2 comprend deux paires de doigts d'appui 7-10, s'étendant dans la plan de la base 2. Les deux doigts 7-8 (9-10) de chaque paire sont situés de part et d'autre de l'extrémité de liaison de l'une des jambes de fixation 5, (6) avec la base 2, au delà du plan dans lequel s'étend la jambe 5 (6) par rapport à l'axe 15.The support base 2 comprises two pairs of support fingers 7-10, extending in the plane of the base 2. The two fingers 7-8 (9-10) of each pair are located on either side of the connecting end of one of the fixing legs 5, (6) with the base 2, beyond the plane in which extends leg 5 (6) relative to axis 15.

Le joint 11 logé dans la cheminée 3 présente ici une forme de manchon et ménage une gorge interne 12 de rétention de gaz de fuite. Le joint 11 est bloqué entre le bord d'extrémité libre rabattu 4 de la cheminée 3 et une bague de maintien 13 introduite dans la cheminée 3 par son ouverture à travers la base d'appui 2. La bague de maintien 13 comprend une paroi interne 14 ayant une portion de forme tronconique s'évasant vers l'extérieur de la cheminée, destinée à faciliter le guidage de l'embout d'éjection 23 de la cartouche de carburant 20 lors de son introduction dans la cheminée 3, et une autre portion 14', adjacente au joint 11, de forme cylindrique, avec une section sensiblement égale à celle de l'embout d'éjection 23, et destinée à guider et à maintenir l'embout 23.The seal 11 housed in the chimney 3 has here a form of sleeve and provides an internal groove 12 for leakage gas retention. Seal 11 is blocked between the folded free end edge 4 of the chimney 3 and a retaining ring 13 introduced into the chimney 3 by its opening at through the support base 2. The retaining ring 13 comprises a wall internal 14 having a frustoconical portion flaring towards the outside of the chimney, intended to facilitate the guidance of the nozzle ejection 23 of the fuel cartridge 20 during its introduction in the chimney 3, and another portion 14 ', adjacent to the joint 11, of cylindrical shape, with a section substantially equal to that of the ejection nozzle 23, and intended to guide and maintain the nozzle 23.

Le raccordement de l'embout d'admission 32 de l'électrovanne 30 et de l'embout d'éjection 23 de la cartouche de carburant 20 va maintenant être décrit. The connection of the inlet nozzle 32 of the solenoid valve 30 and of the ejection nozzle 23 of the fuel cartridge 20 will now be described.

Afin de monter le raccord sur la cartouche de carburant 20, on insère les jambes de fixation 5, 6 à l'intérieur de la margelle 21 de la cartouche 20, jusqu'à ce que les doigts d'appui 7-10 viennent buter contre la margelle 21. Les crochets des jambes 5, 6 s'accrochent, se clipsent, sur la paroi intérieure de la margelle 21. Dans cette position, la bague 13 fait légèrement saillie hors de la cheminée 3 et est en appui contre l'embase 24, en assurant ainsi le maintien du joint 11 en position à l'intérieur de la cheminée 3.In order to mount the fitting on the fuel cartridge 20, insert the fixing legs 5, 6 inside the coping 21 of the cartridge 20, until the supporting fingers 7-10 abut against the coping 21. The hooks of the legs 5, 6 hang, clip, on the wall inside of the coping 21. In this position, the ring 13 is slightly protruding from the chimney 3 and bears against the base 24, thereby ensuring that the seal 11 is held in position inside the chimney 3.

Lors de la fixation du raccord sur la cartouche 20, l'embout d'éjection 23 de la cartouche 20 est guidé dans la cheminée 3 par la paroi interne 14, 14' de la bague de maintien 13.When fixing the connector on the cartridge 20, the ejection nozzle 23 the cartridge 20 is guided into the chimney 3 by the internal wall 14, 14 'of the retaining ring 13.

Puis on introduit la cheminée 3 du raccord dans la douille 40 de l'électrovanne 30, jusqu'à ce que le bord d'extrémité libre de la douille 40 vienne buter contre la base d'appui 2 du raccord. Lors de l'introduction de la cheminée 3 du raccord dans la douille 40, l'embout d'admission mâle 32 de l'électrovanne 30 est guidé dans la cheminée 3 par le bord d'extrémité rabattu 4.Then the chimney 3 of the fitting is introduced into the socket 40 of the solenoid valve 30, until the free end edge of the sleeve 40 abuts against the support base 2 of the connector. During the introduction of the chimney 3 of the fitting in the socket 40, the intake nozzle male 32 of the solenoid valve 30 is guided in the chimney 3 by the edge folded end 4.

Les deux embouts mâles 23, 32, guidés dans la cheminée 3, viennent s'aboucher l'un à l'autre et le joint 11 entoure les deux embouts 23, 32 en s'étendant de part et d'autre du plan de joint des deux embouts 23, 32.The two male ends 23, 32, guided in the chimney 3, come join together and the seal 11 surrounds the two end pieces 23, 32 in extending on either side of the joint plane of the two end pieces 23, 32.

Au repos, le joint obturateur 38 de l'électrovanne 30 est en position d'admission. Dans cette position, du gaz comprimé s'échappe de la cartouche de carburant 20 par l'embout d'éjection 23, pénètre dans l'électrovanne 30 par l'embout d'admission 32 et remplit la chambre de dosage 34, après passage à travers le filtre 33 et dans le conduit d'admission 31.At rest, the obturator seal 38 of the solenoid valve 30 is in position of admission. In this position, compressed gas escapes from the fuel cartridge 20 through the ejection nozzle 23, enters the solenoid valve 30 by the inlet nozzle 32 and fills the chamber with dosage 34, after passing through the filter 33 and into the conduit admission 31.

Le joint 11 assure l'étanchéité du raccord des deux embouts 23, 32. En cas d'une éventuelle fuite de gaz, celui-ci vient se loger dans la gorge interne 12 du joint qui, de toute façon, est de volume limité.The seal 11 seals the connection of the two end pieces 23, 32. In in case of a possible gas leak, it comes to lodge in the throat internal 12 of the seal which, in any case, is of limited volume.

Afin d'alimenter la chambre de combustion de l'appareil de fixation en gaz comprimé, on relie l'embout d'échappement 36 à la chambre de combustion. On actionne l'électro-aimant 39 sous l'action duquel la rondelle ressort 37 se déforme légèrement en déplaçant le joint obturateur 38 de sa position d'admission à sa position d'échappement. Le gaz contenu dans la chambre de dosage 34 s'échappe alors vers l'embout d'échappement 36, par le conduit d'échappement 35. Puis, on arrête l'électro-aimant 39 et le joint obturateur revient en position d'admission. Afin d'injecter la quantité souhaitée de gaz comprimé dans la chambre de combustion de l'appareil de fixation, on entraíne ainsi le joint obturateur 38 dans un mouvement de va-et-vient, entre sa position d'admission et sa position d'échappement.In order to supply the combustion chamber of the fixing device with compressed gas, the exhaust nozzle 36 is connected to the combustion. The electromagnet 39 is actuated under the action of which the spring washer 37 slightly deforms by moving the obturator seal 38 from its intake position to its exhaust position. The gas contained in the metering chamber 34 then escapes towards the nozzle exhaust 36, through the exhaust duct 35. Then, we stop the electromagnet 39 and the obturator seal returns to the intake position. In order to inject the desired amount of compressed gas into the combustion of the fixing device, this causes the sealing gasket 38 in a back and forth movement, between its intake position and its exhaust position.

On pourrait remplacer le joint 11 en forme de manchon par deux joints toriques 16, 17, respectivement destinés à entourer les deux embouts mâles 23, 32 et donc à s'étendre de part et d'autre du plan de joint des deux embouts 32, 33. Dans ce cas, une pièce 18 formant entretoise est intercalée entre les deux joints de façon à les positionner correctement, comme représenté sur la figure 5.We could replace the sleeve-shaped seal 11 by two seals O-rings 16, 17, respectively intended to surround the two end pieces males 23, 32 and therefore to extend on either side of the joint plane of the two end pieces 32, 33. In this case, a piece 18 forming a spacer is interposed between the two seals so as to position them correctly, as shown in figure 5.

Dans une autre forme de réalisation du raccord 50 (figure 6), le joint d'étanchéité 51, en forme de manchon, et la bague de maintien 52 forment une pièce monobloc.In another embodiment of the fitting 50 (FIG. 6), the seal seal 51, in the form of a sleeve, and the retaining ring 52 form a single piece.

Il pourrait également être prévu de solidariser le raccord et la cartouche de carburant.It could also be planned to secure the fitting and the cartridge fuel.

Claims (11)

Raccord pour, d'une part, un embout d'éjection mâle (23) d'une cartouche de carburant (20) destinée à alimenter en gaz comprimé un appareil de fixation à gaz comprimé et, d'autre part, un embout d'admission (32) d'un dispositif (30) d'admission de gaz comprimé dans l'appareil, comportant des moyens d'étanchéité (11; 16, 17; 51) destinés à assurer l'étanchéité du raccord entre les deux embouts (23, 32), caractérisé par le fait que, l'embout (32) du dispositif (30) d'admission de gaz comprimé étant également un embout mâle, le raccord comporte un porte-joint (1) femelle agencé pour recevoir les deux embouts mâles (23, 32) et les moyens d'étanchéité (11; 16, 17; 51) sont agencés pour s'étendre de part et d'autre du plan de joint des deux embouts mâles (23, 32).Connection for, on the one hand, a male ejection end piece (23) of a fuel cartridge (20) for supplying compressed gas to a compressed gas fixing device and, on the other hand, a nozzle intake (32) of a device (30) for admitting compressed gas into the apparatus, comprising sealing means (11; 16, 17; 51) intended to sealing the connection between the two end pieces (23, 32), characterized by the fact that the end piece (32) of the device (30) for admitting compressed gas is also a male connector, the connector includes a female seal holder (1) arranged to receive the two male end pieces (23, 32) and the sealing means (11; 16, 17; 51) are arranged to extend on either side of the joint plane of the two male end pieces (23, 32). Raccord selon la revendication 1, dans lequel les moyens d'étanchéité comprennent un joint (11; 51) en forme de manchon agencé pour entourer les deux embouts mâles (23, 32).Fitting according to claim 1, in which the sealing means include a sleeve-shaped seal (11; 51) arranged to surround the two male ends (23, 32). Raccord selon la revendication 2, dans lequel le joint comprend une gorge interne (12) de rétention de gaz de fuite.A connector according to claim 2, wherein the joint comprises a internal groove (12) for retaining leaking gas. Raccord selon la revendication 1, les moyens d'étanchéité comprennent deux joints toriques (16, 17) destinés à entourer respectivement les deux embouts mâles.Fitting according to claim 1, the sealing means comprise two O-rings (16, 17) intended to surround the two respectively male end caps. Raccord selon l'une des revendications 1 à 4, dans lequel le porte-joint (1) est agencé pour guider les deux embouts mâles (23, 32) de façon à les faire s'aboucher l'un à l'autre.Fitting according to one of Claims 1 to 4, in which the seal holder (1) is arranged to guide the two male end pieces (23, 32) so as to to kiss each other. Raccord selon l'une des revendications 1 à 5, comprenant des moyens de fixation (5, 6) à la cartouche de carburant (20).Connection according to one of claims 1 to 5, comprising means fixing (5, 6) to the fuel cartridge (20). Raccord selon la revendication 6, dans lequel, la cartouche de carburant (20) comportant une margelle (21), les moyens de fixation comprennent au moins deux jambes à crochet (5, 6) agencées pour être clipsées sur la margelle (21). A connector according to claim 6, wherein the cartridge of fuel (20) comprising a coping (21), the fixing means comprise at least two hooked legs (5, 6) arranged to be clipped onto the coping (21). Raccord selon l'une des revendications 1 à 7, dans lequel le porte-joint (1) comprend une cheminée (3) de logement des moyens d'étanchéité (11; 16, 17; 51) et il est prévu une bague de maintien (14; 52) destinée à bloquer les moyens d'étanchéité (11; 16, 17; 51) dans la cheminée (3).Fitting according to one of Claims 1 to 7, in which the seal holder (1) comprises a chimney (3) for housing the sealing means (11; 16, 17; 51) and a retaining ring (14; 52) is provided for block the sealing means (11; 16, 17; 51) in the chimney (3). Raccord selon la revendication 8, dans lequel les moyens d'étanchéité (51) et la bague de maintien (52) forment une pièce monobloc.Fitting according to claim 8, in which the sealing means (51) and the retaining ring (52) form a single piece. Raccord selon l'une des revendications 1 à 9, dans lequel le porte-joint (1) est monobloc et en matière plastique.Fitting according to one of Claims 1 to 9, in which the seal holder (1) is in one piece and made of plastic. Ensemble comportant une cartouche de carburant et un raccord selon l'une des revendications 1 à 10, dans lequel le raccord est solidaire de la cartouche de carburant.Assembly comprising a fuel cartridge and a connector according to one of claims 1 to 10, in which the connector is integral with the fuel cartridge.
EP98402916A 1997-11-28 1998-11-24 Coupling for compressed gas fastening tool and a compressed gas cartridge Expired - Lifetime EP0922902B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9715004A FR2771796B1 (en) 1997-11-28 1997-11-28 FITTING FOR COMPRESSED GAS FIXING APPARATUS AND COMPRESSED GAS CARTRIDGE
FR9715004 1997-11-28

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EP0922902A1 true EP0922902A1 (en) 1999-06-16
EP0922902B1 EP0922902B1 (en) 2008-07-23

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EP (1) EP0922902B1 (en)
AT (1) ATE402370T1 (en)
CA (1) CA2254552C (en)
DE (1) DE69839758D1 (en)
FR (1) FR2771796B1 (en)
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FR2870920A1 (en) * 2004-05-25 2005-12-02 Prospection & Inventions Adaptor for connecting solenoid and compressed gas canister, has joint made up of elastic material, with annular transverse portion to interpose between male ejection and male inlet end-pieces, where joint is disposed in outer skirt
AU2005248142B2 (en) * 2004-05-25 2008-07-31 Societe De Prospection Et D'inventions Techniques Spit Connecting adapter for a gas cartridge and a gas induction device of a gas fastening apparatus, the cartridge, the solenoid valve and the apparatus with the adapter
US8104798B2 (en) 2004-05-25 2012-01-31 Illinois Tool Works, Inc. Connecting adapter for a gas cartridge and a gas induction device of a gas fastening apparatus, the cartridge, the solenoid valve and the apparatus with the adapter
DE202013001376U1 (en) 2013-02-14 2013-04-09 Olaf Kersten Cartridge adapter system with removal device for gas-operated setting devices

Also Published As

Publication number Publication date
US6217085B1 (en) 2001-04-17
CA2254552C (en) 2002-10-01
DE69839758D1 (en) 2008-09-04
NZ333037A (en) 2000-06-23
EP0922902B1 (en) 2008-07-23
FR2771796A1 (en) 1999-06-04
AU705255B1 (en) 1999-05-20
FR2771796B1 (en) 2000-01-14
ATE402370T1 (en) 2008-08-15
CA2254552A1 (en) 1999-05-28

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