EP1502709A1 - Fastening tool with piston driven by gas - Google Patents

Fastening tool with piston driven by gas Download PDF

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Publication number
EP1502709A1
EP1502709A1 EP04291868A EP04291868A EP1502709A1 EP 1502709 A1 EP1502709 A1 EP 1502709A1 EP 04291868 A EP04291868 A EP 04291868A EP 04291868 A EP04291868 A EP 04291868A EP 1502709 A1 EP1502709 A1 EP 1502709A1
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EP
European Patent Office
Prior art keywords
chamber
sleeve
cylinder
cage
support
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
EP04291868A
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German (de)
French (fr)
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EP1502709B1 (en
Inventor
Frédéric Nayrac
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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Publication of EP1502709A1 publication Critical patent/EP1502709A1/en
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Publication of EP1502709B1 publication Critical patent/EP1502709B1/en
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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

Definitions

  • the invention relates to an apparatus for sealing or perforating or driving or driving any element in a material receiver, type nailing, stapling or hammer, gas operated.
  • a piston is movably mounted in a cylinder for be propelled by the explosion of a mixture of air and a combustible gas injected from a cartridge into a combustion chamber and for driving an element, for example fixing (a nail or a pad), or other ankle.
  • an organ, called cage which, when putting in support and via a probe that can be a mobile buffer guide, pushes a chamber sleeve to the stop against the bolt the spark plug intended to cause the explosion, in order to close the combustion chamber thus closed by this sleeve, the cylinder head and the head of the piston.
  • the cage and the sleeve can be connected to each other by screwing.
  • the recoil of the cage is effected against the action of a return spring, to recall the device in the open position, also in support against the cylinder of the piston.
  • binding pressures are exerted on the cylinder head during the operation of such apparatus, in particular because portions of surface of the cylinder head and cylinder face each other. And even if in other devices, these harmful pressures are no longer exerted on the breech, they are carried on the cage, which is not necessarily better.
  • the invention of the present application aims to overcome all constraints of parasitic pressure on both the cylinder head and the cage.
  • the invention relates to a gas-operated apparatus in which which, under the action of the explosion of a mixture of air and gas in a closed chamber via a chamber sleeve and a cage when the device is put in support, a piston is propelled into a cylinder for driving an element, characterized in that the sleeve chamber and the cylinder are arranged so that when closing the the device, the chamber sleeve comes into abutment against the cylinder.
  • the cage and the Sleeve sleeve are linked with sliding play, to avoid the propagation of constraints.
  • the chamber sleeve may comprise at least one support pad, arranged to abut against a bearing lug of the cylinder, at least one connecting pin of the chamber sleeve and the cage and at least one ear support a spring opening, also against a cheek cylinder, and mutual thrust of one by the other of the chamber sleeve and the cage.
  • the chamber sleeve may also include at least one skate support, thrust and connection arranged to abut against a cheek of the cylinder in the closed position, at least one pin of connection of the chamber sleeve, the support pad and the cage and at least an opening spring of the chamber in abutment against the support cheek and the support pad.
  • the pad carries a section support finger narrowed arranged to bear against the cheek of the cylinder and receive the opening spring.
  • the device At the front of a cylinder head, carrying a spark plug and a fan motor, these elements of the apparatus not being represented, any more than the handle and actuation handle, the gas cartridge and the Anchor loader, the device has a chamber sleeve 1, a cylinder 2, front portion 3 of reduced section, a cage 4 of chamber closing and a probe 5.
  • the probe 5, moreover classic, is integral in translation with the cage, here by screw, cage a semi-tubular front portion 6 wraps the back of the probe.
  • the front portion 6 of the cage 4 is extended towards the rear by two lateral arms 7, 8 whose rear end 9 is bent towards the axis 16 of the apparatus to form a connecting spout.
  • the two arms 7, 8 of the cage extend along the cylinder 2, outside, up to the anterior portion 10 of the chamber sleeve 1.
  • the cylinder 2 On its outer wall, the cylinder 2 carries radial support lugs 11 to serve as stops for the chamber sleeve 1 in the closed position, and, behind the support lugs 11, radial support cheeks 12 serving of stops to springs 13 for returning the chamber to the open position.
  • the back 14 of the chamber sleeve 1 forms partially the combustion chamber 15 of the apparatus.
  • a propulsion piston 17 In the cylinder 2 is mounted a propulsion piston 17, with its head 18, also partially forming the chamber 15, and its propulsion rod 19.
  • the cylinder comprises a rear bead 20 in which is formed a receiving groove of a seal 21 intended, in the closed position, to ensure, with the chamber sleeve 1, the front seal of the chamber of combustion 15.
  • the chamber sleeve 1 in the middle part and in a cross section perpendicular to the axis 16, present in the axial extension of a bulge of the chamber sleeve which it will be question below, a portion of inner rib 22 cooperating with the seal 21 in the closed position.
  • a connecting pin 33 crosses each bulge and its two pads 30, 31 perpendicularly at the same axial plane.
  • a radial bearing lug 34 extends between the two support pads of each cradle 29, in the manner of an internal bottom, to the opposite of the anterior edge 28 of the sleeve.
  • the springs 13 reminder of the chamber in the open position, bearing against the radial bearing faces 12 of the cylinder 2, are also respectively in support against the ears 34 of the chamber sleeve 1.
  • the connecting spout 9 of each arm 7, 8 it has passed, by its free end portion 35, turned towards the axis 16, at the rear of the associated connecting pin 33.
  • the part end 35 of a connecting nose 9 of a cage arm 7, 8 can, here, relative to the chamber sleeve 1, to be driven in sliding relative on a game run of length equal to the distance separating the support lug 34 and the connecting pin 33 of the associated cradle 29, which allows to qualify the sliding connection of the cage and the sleeve of This degree of freedom avoids the propagation of constraints.
  • the cage and sleeve could be slid-free without play.
  • the cage 6, via the probe 5, is pushed towards the rear of the device.
  • the connecting spouts 9 start by retreating from the connecting pin 33 to the support lug 34 of their support assembly, push and associated link, before the cage 4, 6, by the support lugs 34 serving thrust member, does not push the chamber sleeve along the cylinder 2, compressing the return springs 13 (FIG. 2), until that the support pads 30, 31 abut against the support lugs 11 of cylinder 2 (FIG. 3) and that, thus, the combustion chamber 15 is closed, with seal before insured.
  • the device is then ready for shooting.
  • the spring expansion 13 slides the chamber sleeve 1 forwards on the cylinder 2, until the inner rib portions 22 of the sleeve come in abutment against shock absorbers 36 resting against the support cheeks 12 of the cylinder and that the device is in the position of combustion chamber opened.
  • the pushing lugs 34 also drive forward sliding the 9 and thus the arms 7, 8 of the cage 6. Under the action of his weight, the cage may continue to run forward the link arms 9 abut against the pins 33.
  • the support pads 30, 31 are made of a material shock absorber to better dampen shocks.
  • these pads 30, 31 comprise at least one transverse rear support slice 39 intended to abut against a support lug 11 which, it is in a damping material, slice attached to the pad, in particular by gluing, welding.
  • each set is replaced by a single support pad, thrust and link 43, 44 shaped so special.
  • its shape is such that it can also be housed in one of the external bulges 25, such as the cradles 29.
  • it includes a connecting elbow 45 and a thrust and bearing finger 46 extending the connecting elbow 45.
  • the connecting elbow 45 in the form of an arch, receives, in its concave internal groove, a connecting pin 33 which passes through the associated bulge 25.
  • the connecting elbow 45 and the thrust finger and 46 are connected to each other by a bridge, leaving between them a groove 47 for receiving the connecting lug 9 of the associated cage arm 7, 8.
  • the push and support finger 46 extends in a form cylindrical from a base 48, larger section than the finger 46, in providing an annular shoulder 49 for abutting the opening spring 13 of the chamber in abutment at its other end against the support cheek 12 of the cylinder 2.
  • FIGS. 5, 6 The operation of the apparatus of FIGS. 5, 6 is the same as that of other figures.
  • the cage 4 When the device bears against a receiving material, the cage 4, via the probe, is pushed towards the rear of the device.
  • the cage 4 by the jaws 9 and fingers 46 of the pads, serving as a thrust member, pushes the chamber sleeve 1 along the cylinder 2, compressing the return springs 13 (FIG. 5), until the fingers 46 of the skids 42, 44 come into abutment against the support cheeks 12 of the cylinder 2 ( Figure 6) and that, thus, the combustion chamber 15 is closed, with tightness before assured.
  • the device is then ready for shooting.
  • the spring expansion 13 slides the chamber sleeve 1 forwards on the cylinder 2, until the inner rib portions 22 of the sleeve come in abutment against shock absorbers 36 resting against the support cheeks 12 of the cylinder and that the device is in the position of combustion chamber opened.
  • the pushing fingers 46 also drive forward sliding the connecting jaws 9 and thus the arms 7, 8 of the cage 4.
  • the pads 43, 44, with their connecting elbow 45 and their pushing finger and 46, are advantageously made of a damping material, of preferably elastomer, to better dampen shocks.
  • the pads 43, 44 may comprise at least one slice transverse rear support 50 of damping material.

Abstract

The apparatus has a chamber (15) closed by a chamber sleeve (1) and a cage. A piston (17) is propelled in a cylinder (2) to drive a unit e.g. nail, under the action of explosion of gas-air mixture in the chamber. The chamber sleeve and the cylinder are arranged such that the sleeve comes into stop against the cylinder at the time of closing of the apparatus. The cage and the chamber sleeve are connected with a clearance by sliding.

Description

L'invention concerne un appareil de scellement ou de perforation ou d'entraínement ou d'enfoncement de tout élément dans un matériau récepteur, du type cloueur, agrafeuse ou marteau, à fonctionnement à gaz.The invention relates to an apparatus for sealing or perforating or driving or driving any element in a material receiver, type nailing, stapling or hammer, gas operated.

Dans un tel appareil, un piston est monté mobile dans un cylindre pour y être propulsé, par l'explosion d'un mélange d'air et d'un gaz combustible injecté, depuis une cartouche, dans une chambre de combustion, et pour entraíner un élément, par exemple de fixation (un clou ou un tampon), ou autre cheville. Outre la sécurité d'appui, qui interdit toute mise à feu quand l'appareil n'est pas en appui contre un matériau récepteur, il est prévu dans ce genre d'appareil un organe, appelé cage, qui, lors de la mise en appui et par l'intermédiaire d'un palpeur pouvant être un guide-tampon mobile, repousse un manchon de chambre jusqu'en butée contre la culasse qui porte la bougie d'allumage destinée à provoquer l'explosion, afin de refermer la chambre de combustion ainsi fermée par ce manchon, la culasse et la tête du piston. La cage et le manchon peuvent être liés l'un à l'autre par vissage. En outre, le recul de la cage s'effectue contre l'action d'un ressort de rappel, pour rappeler l'appareil en position d'ouverture, également en appui contre le cylindre du piston.In such an apparatus, a piston is movably mounted in a cylinder for be propelled by the explosion of a mixture of air and a combustible gas injected from a cartridge into a combustion chamber and for driving an element, for example fixing (a nail or a pad), or other ankle. In addition to support security, which prohibits firing when the apparatus does not bear against a receiving material, it is provided in this kind of device an organ, called cage, which, when putting in support and via a probe that can be a mobile buffer guide, pushes a chamber sleeve to the stop against the bolt the spark plug intended to cause the explosion, in order to close the combustion chamber thus closed by this sleeve, the cylinder head and the head of the piston. The cage and the sleeve can be connected to each other by screwing. In addition, the recoil of the cage is effected against the action of a return spring, to recall the device in the open position, also in support against the cylinder of the piston.

Du fait de la mise en appui de la chambre de combustion contre la culasse, des pressions contraignantes s'exercent sur la culasse lors du fonctionnement d'un tel appareil, notamment parce que des portions de surface de la culasse et du cylindre se font mutuellement face. Et même si dans d'autres appareils, ces pressions néfastes ne s'exercent plus sur la culasse, elles sont reportées sur la cage, ce qui n'est pas forcément mieux.Due to the support of the combustion chamber against the cylinder head, binding pressures are exerted on the cylinder head during the operation of such apparatus, in particular because portions of surface of the cylinder head and cylinder face each other. And even if in other devices, these harmful pressures are no longer exerted on the breech, they are carried on the cage, which is not necessarily better.

L'invention de la présente demande vise à s'affranchir de toute contrainte de pression parasite tant sur la culasse que sur la cage.The invention of the present application aims to overcome all constraints of parasitic pressure on both the cylinder head and the cage.

A cet effet, l'invention concerne un appareil à fonctionnement à gaz, dans lequel, sous l'action de l'explosion d'un mélange d'air et de gaz dans une chambre fermée par l'intermédiaire d'un manchon de chambre et d'une cage lors de la mise en appui de l'appareil, un piston est propulsé dans un cylindre pour entraíner un élément, caractérisé par le fait que le manchon de chambre et le cylindre sont agencés pour que, lors de la fermeture de l'appareil, le manchon de chambre vienne en butée contre le cylindre.For this purpose, the invention relates to a gas-operated apparatus in which which, under the action of the explosion of a mixture of air and gas in a closed chamber via a chamber sleeve and a cage when the device is put in support, a piston is propelled into a cylinder for driving an element, characterized in that the sleeve chamber and the cylinder are arranged so that when closing the the device, the chamber sleeve comes into abutment against the cylinder.

Par élément, il faut entendre soit un clou, un tampon, une cheville, une agrafe ou tout autre élément analogue. By element, it is necessary to hear either a nail, a buffer, an ankle, a staple or any other similar element.

Dans une forme de réalisation de l'appareil de l'invention, la cage et le manchon de chambre sont liés avec jeu en coulissement, pour éviter la propagation des contraintes.In one embodiment of the apparatus of the invention, the cage and the Sleeve sleeve are linked with sliding play, to avoid the propagation of constraints.

Le manchon de chambre peut comporter au moins un patin d'appui, disposé pour venir en butée contre une oreille d'appui du cylindre, au moins une goupille de liaison du manchon de chambre et de la cage et au moins une oreille d'appui d'un ressort d'ouverture, en appui aussi contre une joue du cylindre, et de poussée mutuelle de l'un par l'autre du manchon de chambre et de la cage.The chamber sleeve may comprise at least one support pad, arranged to abut against a bearing lug of the cylinder, at least one connecting pin of the chamber sleeve and the cage and at least one ear support a spring opening, also against a cheek cylinder, and mutual thrust of one by the other of the chamber sleeve and the cage.

Mais le manchon de chambre peut aussi comporter au moins un patin d'appui, de poussée et de liaison disposé pour venir en butée contre une joue d'appui du cylindre en position de fermeture, au moins une goupille de liaison du manchon de chambre, du patin d'appui et de la cage et au moins un ressort d'ouverture de la chambre en butée contre la joue d'appui et le patin d'appui.But the chamber sleeve may also include at least one skate support, thrust and connection arranged to abut against a cheek of the cylinder in the closed position, at least one pin of connection of the chamber sleeve, the support pad and the cage and at least an opening spring of the chamber in abutment against the support cheek and the support pad.

Dans ce cas, il est intéressant que le patin porte un doigt d'appui de section rétrécie agencé pour venir en appui contre la joue du cylindre et recevoir le ressort d'ouverture.In this case, it is interesting that the pad carries a section support finger narrowed arranged to bear against the cheek of the cylinder and receive the opening spring.

L'invention sera mieux comprise à l'aide de la description suivante de deux formes de réalisation de l'appareil de l'invention, en référence au dessin annexé, sur lequel

  • la figure 1 est une vue de profil de la première forme de réalisation de l'appareil, en position d'ouverture;
  • la figure 2 est une vue en coupe axiale de l'appareil de la figure 1, en position d'ouverture ;
  • la figure 3 est une vue de l'appareil de la figure 1 en position de fermeture, en coupe axiale dans un plan incliné d'environ 20° sur le plan de coupe de la figure 1 ;
  • la figure 4 est une vue en perspective, avec arraché partiel, du manchon de l'appareil de la figure 1 ;
  • la figure 5 est une vue en coupe axiale de la deuxième forme de réalisation de l'appareil en position d'ouverture et
  • la figure 6 est une vue en coupe axiale de l'appareil de la figure 5, en position de fermeture.
The invention will be better understood with the aid of the following description of two embodiments of the apparatus of the invention, with reference to the appended drawing, in which
  • Figure 1 is a side view of the first embodiment of the apparatus, in the open position;
  • Figure 2 is an axial sectional view of the apparatus of Figure 1, in the open position;
  • Figure 3 is a view of the apparatus of Figure 1 in the closed position, in axial section in an inclined plane of about 20 ° on the sectional plane of Figure 1;
  • Figure 4 is a perspective view, partially broken away, of the sleeve of the apparatus of Figure 1;
  • FIG. 5 is an axial sectional view of the second embodiment of the apparatus in the open position and
  • Figure 6 is an axial sectional view of the apparatus of Figure 5, in the closed position.

A l'avant d'une culasse, portant une bougie d'allumage et un moto-ventilateur, ces éléments de l'appareil n'étant pas représentés, pas plus que la poignée de préhension et d'actionnement, la cartouche de gaz et le chargeur d'éléments d'ancrage, l'appareil comporte un manchon de chambre 1, un cylindre 2, à portion avant 3 de section réduite, une cage 4 de fermeture de chambre et un palpeur 5.At the front of a cylinder head, carrying a spark plug and a fan motor, these elements of the apparatus not being represented, any more than the handle and actuation handle, the gas cartridge and the Anchor loader, the device has a chamber sleeve 1, a cylinder 2, front portion 3 of reduced section, a cage 4 of chamber closing and a probe 5.

Le palpeur 5, au demeurant classique, est solidaire en translation de la cage, ici par vis, cage dont une portion avant semi-tubulaire 6 enveloppe l'arrière du palpeur. La portion avant 6 de la cage 4 se prolonge, vers l'arrière, par deux bras latéraux 7, 8 dont l'extrémité arrière 9 est coudée vers l'axe 16 de l'appareil pour former un bec de liaison.The probe 5, moreover classic, is integral in translation with the cage, here by screw, cage a semi-tubular front portion 6 wraps the back of the probe. The front portion 6 of the cage 4 is extended towards the rear by two lateral arms 7, 8 whose rear end 9 is bent towards the axis 16 of the apparatus to form a connecting spout.

Les deux bras 7, 8 de la cage s'étendent le long du cylindre 2, à l'extérieur, jusqu'à la partie antérieure 10 du manchon de chambre 1.The two arms 7, 8 of the cage extend along the cylinder 2, outside, up to the anterior portion 10 of the chamber sleeve 1.

Sur sa paroi extérieure, le cylindre 2 porte des oreilles radiales d'appui 11 pour servir de butées au manchon de chambre 1 en position de fermeture, et, à l'arrière des oreilles d'appui 11, des joues radiales d'appui 12, servant de butées à des ressorts 13 de rappel de la chambre en position d'ouverture.On its outer wall, the cylinder 2 carries radial support lugs 11 to serve as stops for the chamber sleeve 1 in the closed position, and, behind the support lugs 11, radial support cheeks 12 serving of stops to springs 13 for returning the chamber to the open position.

De façon classique, et c'est pourquoi la description ne sera pas amplement développée sur ce point, l'arrière 14 du manchon de chambre 1 forme partiellement la chambre de combustion 15 de l'appareil.In a classic way, and that is why the description will not be amply developed on this point, the back 14 of the chamber sleeve 1 forms partially the combustion chamber 15 of the apparatus.

Dans le cylindre 2 est monté un piston de propulsion 17, avec sa tête 18, formant aussi en partie la chambre 15, et sa tige de propulsion 19. Le cylindre comporte un bourrelet arrière 20 dans lequel est ménagée une gorge de réception d'un joint 21 destiné, en position de fermeture, à assurer, avec le manchon de chambre 1, l'étanchéité avant de la chambre de combustion 15.In the cylinder 2 is mounted a propulsion piston 17, with its head 18, also partially forming the chamber 15, and its propulsion rod 19. The cylinder comprises a rear bead 20 in which is formed a receiving groove of a seal 21 intended, in the closed position, to ensure, with the chamber sleeve 1, the front seal of the chamber of combustion 15.

A cet effet, le manchon de chambre 1, en partie médiane et dans une tranche transversale perpendiculaire à l'axe 16, présente, dans le prolongement axial d'un renflement du manchon de chambre dont il sera question ci-après, une portion de nervure intérieure 22 coopérant avec le joint 21 en position de fermeture. For this purpose, the chamber sleeve 1, in the middle part and in a cross section perpendicular to the axis 16, present in the axial extension of a bulge of the chamber sleeve which it will be question below, a portion of inner rib 22 cooperating with the seal 21 in the closed position.

C'est la partie antérieure 10 du manchon de chambre qui va maintenant être plus précisément décrite. Elle comporte ici, en bordure de manchon et diamétralement opposés dans le plan axial de la coupe de la figure 2, deux ensembles d'appui, de poussée et de liaison 23, 24. Chaque ensemble est logé dans un renflement externe 25 de la paroi 26, à fond plat 27, s'étendant depuis le bord 28 du manchon sur une relativement petite largeur axiale. A l'intérieur de chaque renflement, et de même largeur axiale, est disposé un berceau 29 constitué de deux patins d'appui 30, 31 symétriques par rapport au plan axial défini ci-dessus, épousant le renflement et, chacun, une petite portion de la paroi intérieure 32 du manchon. Une goupille de liaison 33 traverse chaque renflement et ses deux patins 30, 31 perpendiculairement au même plan axial. Enfin, une oreille d'appui radiale 34 s'étend entre les deux patins d'appui de chaque berceau 29, à la manière d'un fond interne, à l'opposé du bord antérieur 28 du manchon. Les ressorts 13 de rappel de la chambre en position d'ouverture, en appui contre les faces radiales d'appui 12 du cylindre 2, sont également respectivement en appui contre les oreilles d'appui 34 du manchon de chambre 1. Quant au bec de liaison 9 de chaque bras 7, 8, il est passé, par sa partie d'extrémité libre 35, tournée vers l'axe 16, à l'arrière de la goupille de liaison associée 33. Ainsi, la partie d'extrémité 35 d'un bec de liaison 9 d'un bras de cage 7, 8 peut, ici, relativement au manchon de chambre 1, être entraínée en coulissement relatif sur une course de jeu de longueur égale à la distance séparant l'oreille d'appui 34 et la goupille de liaison 33 du berceau 29 associé, ce qui permet de qualifier la liaison en coulissement de la cage et du manchon de liaison avec jeu. Ce degré de liberté évite ici la propagation des contraintes.This is the anterior part 10 of the chamber sleeve that will now be more precisely described. It has here, at the edge of the sleeve and diametrically opposite in the axial plane of the section of Figure 2, two support, push and link assemblies 23, 24. Each set is housed in an outer bulge 25 of the wall 26, with a flat bottom 27, extending from the edge 28 of the sleeve over a relatively small axial width. AT the interior of each bulge, and of the same axial width, is arranged a cradle 29 consisting of two bearing pads 30, 31 symmetrical relative in the axial plane defined above, matching the bulge and, each, a small portion of the inner wall 32 of the sleeve. A connecting pin 33 crosses each bulge and its two pads 30, 31 perpendicularly at the same axial plane. Finally, a radial bearing lug 34 extends between the two support pads of each cradle 29, in the manner of an internal bottom, to the opposite of the anterior edge 28 of the sleeve. The springs 13 reminder of the chamber in the open position, bearing against the radial bearing faces 12 of the cylinder 2, are also respectively in support against the ears 34 of the chamber sleeve 1. As for the connecting spout 9 of each arm 7, 8, it has passed, by its free end portion 35, turned towards the axis 16, at the rear of the associated connecting pin 33. Thus, the part end 35 of a connecting nose 9 of a cage arm 7, 8 can, here, relative to the chamber sleeve 1, to be driven in sliding relative on a game run of length equal to the distance separating the support lug 34 and the connecting pin 33 of the associated cradle 29, which allows to qualify the sliding connection of the cage and the sleeve of This degree of freedom avoids the propagation of constraints.

Dans une autre forme de réalisation dont il va être question ci-après, la cage et le manchon pourraient être liés en coulissement sans jeu.In another embodiment which will be discussed below, the cage and sleeve could be slid-free without play.

Le fonctionnement de l'appareil va maintenant être décrit.The operation of the apparatus will now be described.

Lors de la mise en appui de l'appareil contre un matériau récepteur, la cage 6, par l'intermédiaire du palpeur 5, est poussée vers l'arrière de l'appareil. Les becs de liaison 9 commencent par reculer depuis la goupille de liaison 33 jusqu'à l'oreille d'appui 34 de leur ensemble d'appui, de poussée et de liaison associé, avant que la cage 4, 6, par les oreilles d'appui 34 servant d'organe de poussée, ne repousse le manchon de chambre le long du cylindre 2, en comprimant les ressorts de rappel 13 (figure 2), jusqu'à ce que les patins d'appui 30, 31 viennent en butée contre les oreilles d'appui 11 du cylindre 2 (figure 3) et que, ainsi, la chambre de combustion 15 soit fermée, avec étanchéité avant assurée.When the device bears against a receiving material, the cage 6, via the probe 5, is pushed towards the rear of the device. The connecting spouts 9 start by retreating from the connecting pin 33 to the support lug 34 of their support assembly, push and associated link, before the cage 4, 6, by the support lugs 34 serving thrust member, does not push the chamber sleeve along the cylinder 2, compressing the return springs 13 (FIG. 2), until that the support pads 30, 31 abut against the support lugs 11 of cylinder 2 (FIG. 3) and that, thus, the combustion chamber 15 is closed, with seal before insured.

L'appareil est alors prêt au tir.The device is then ready for shooting.

Quand on dégage l'appareil du matériau récepteur, la détente des ressorts 13 fait coulisser le manchon de chambre 1 vers l'avant sur le cylindre 2, jusqu'à ce que les portions de nervure intérieure 22 du manchon viennent en butée contre des amortisseurs 36 en appui contre les joues d'appui 12 du cylindre et que l'appareil se retrouve en position de chambre de combustion ouverte. Lors du coulissement d'ouverture du manchon de chambre 1, les oreilles de poussée 34 entraínent également en coulissement vers l'avant les becs de liaison 9 et donc les bras 7, 8 de la cage 6. Sous l'action de son poids, la cage peut éventuellement poursuivre sa course vers l'avant jusqu'à ce que les bras de liaison 9 viennent en butée contre les goupilles 33.When the device is released from the receiving material, the spring expansion 13 slides the chamber sleeve 1 forwards on the cylinder 2, until the inner rib portions 22 of the sleeve come in abutment against shock absorbers 36 resting against the support cheeks 12 of the cylinder and that the device is in the position of combustion chamber opened. When sliding the opening of the chamber sleeve 1, the pushing lugs 34 also drive forward sliding the 9 and thus the arms 7, 8 of the cage 6. Under the action of his weight, the cage may continue to run forward the link arms 9 abut against the pins 33.

Avantageusement, les patins d'appui 30, 31 sont réalisés dans un matériau amortisseur pour mieux amortir les chocs. Alternativement, ces patins 30, 31 comportent au moins une tranche d'appui arrière transversale 39 destinée à venir en butée contre une oreille d'appui 11 qui, elle, est dans un matériau amortisseur, tranche rapportée sur le patin, notamment par collage, soudage.Advantageously, the support pads 30, 31 are made of a material shock absorber to better dampen shocks. Alternatively, these pads 30, 31 comprise at least one transverse rear support slice 39 intended to abut against a support lug 11 which, it is in a damping material, slice attached to the pad, in particular by gluing, welding.

On vient de décrire un manchon de chambre à deux ensembles d'appui, de poussée et de liaison, avec jeu chacun comportant un berceau à deux patins.We have just described a chamber sleeve with two sets of support, push and link, with each game having a cradle with two pads.

Dans une variante de réalisation de l'appareil de l'invention, représentée sur les figures 5, 6 sur lesquelles les mêmes références désignent les mêmes éléments que sur les autres figures, chaque ensemble est remplacé par un unique patin d'appui, de poussée et de liaison 43, 44 conformé de façon particulière.In an alternative embodiment of the apparatus of the invention, shown in FIGS. 5, 6 on which the same references designate the same elements than in the other figures, each set is replaced by a single support pad, thrust and link 43, 44 shaped so special.

Tout d'abord, sa forme est telle qu'il puisse être également logé dans un des renflements externes 25, comme les berceaux 29. En outre, il comporte un coude de liaison 45 et un doigt de poussée et d'appui 46 prolongeant le coude de liaison 45. Le coude de liaison 45, en forme d'arceau, reçoit, dans sa gorge interne concave, une goupille de liaison 33 qui traverse le renflement associé 25. Le coude de liaison 45 et le doigt de poussée et d'appui 46 sont liés l'un à l'autre par un pont en ménageant entre eux une gorge 47 de réception du bec de liaison 9 du bras de cage associé 7, 8. First of all, its shape is such that it can also be housed in one of the external bulges 25, such as the cradles 29. In addition, it includes a connecting elbow 45 and a thrust and bearing finger 46 extending the connecting elbow 45. The connecting elbow 45, in the form of an arch, receives, in its concave internal groove, a connecting pin 33 which passes through the associated bulge 25. The connecting elbow 45 and the thrust finger and 46 are connected to each other by a bridge, leaving between them a groove 47 for receiving the connecting lug 9 of the associated cage arm 7, 8.

Quant au doigt de poussée et d'appui 46, il s'étend sous une forme cylindrique depuis une base 48, de plus grande section que le doigt 46, en ménageant un épaulement annulaire 49 de butée du ressort 13 d'ouverture de la chambre en butée à son autre extrémité contre la joue d'appui 12 du cylindre 2.As for the push and support finger 46, it extends in a form cylindrical from a base 48, larger section than the finger 46, in providing an annular shoulder 49 for abutting the opening spring 13 of the chamber in abutment at its other end against the support cheek 12 of the cylinder 2.

La forme de réalisation des figures 5, 6 se distingue donc essentiellement de celle des autres figures par les caractéristiques suivantes :

  • la cage 4 et le manchon 1 sont liés en coulissement sans jeu ;
  • les oreilles d'appui 11 ont été supprimées ;
  • les patins 43, 44 sont plus simples que les berceaux 29.
The embodiment of FIGS. 5, 6 is thus essentially different from that of the other figures by the following characteristics:
  • the cage 4 and the sleeve 1 are slidably connected without play;
  • the supporting ears 11 have been removed;
  • the pads 43, 44 are simpler than the cradles 29.

Le fonctionnement de l'appareil des figures 5, 6 est le même que celui des autres figures.The operation of the apparatus of FIGS. 5, 6 is the same as that of other figures.

Lors de la mise en appui de l'appareil contre un matériau récepteur, la cage 4, par l'intermédiaire du palpeur, est poussée vers l'arrière de l'appareil. La cage 4, par les becs 9 et doigts 46 des patins, servant d'organe de poussée, repousse le manchon de chambre 1 le long du cylindre 2, en comprimant les ressorts de rappel 13 (figure 5), jusqu'à ce que les doigts 46 des patins d'appui 42, 44 viennent en butée contre les joues d'appui 12 du cylindre 2 (figure 6) et que, ainsi, la chambre de combustion 15 soit fermée, avec étanchéité avant assurée.When the device bears against a receiving material, the cage 4, via the probe, is pushed towards the rear of the device. The cage 4, by the jaws 9 and fingers 46 of the pads, serving as a thrust member, pushes the chamber sleeve 1 along the cylinder 2, compressing the return springs 13 (FIG. 5), until the fingers 46 of the skids 42, 44 come into abutment against the support cheeks 12 of the cylinder 2 (Figure 6) and that, thus, the combustion chamber 15 is closed, with tightness before assured.

L'appareil est alors prêt au tir.The device is then ready for shooting.

Quand on dégage l'appareil du matériau récepteur, la détente des ressorts 13 fait coulisser le manchon de chambre 1 vers l'avant sur le cylindre 2, jusqu'à ce que les portions de nervure intérieure 22 du manchon viennent en butée contre des amortisseurs 36 en appui contre les joues d'appui 12 du cylindre et que l'appareil se retrouve en position de chambre de combustion ouverte. Lors du coulissement d'ouverture du manchon de chambre 1, les doigts de poussée 46 entraínent également en coulissement vers l'avant les becs de liaison 9 et donc les bras 7, 8 de la cage 4.When the device is released from the receiving material, the spring expansion 13 slides the chamber sleeve 1 forwards on the cylinder 2, until the inner rib portions 22 of the sleeve come in abutment against shock absorbers 36 resting against the support cheeks 12 of the cylinder and that the device is in the position of combustion chamber opened. When sliding the opening of the chamber sleeve 1, the pushing fingers 46 also drive forward sliding the connecting jaws 9 and thus the arms 7, 8 of the cage 4.

Les patins 43, 44, avec leur coude de liaison 45 et leur doigt de poussée et d'appui 46, sont avantageusement réalisés dans un matériau amortisseur, de préférence en élastomère, pour mieux amortir les chocs. Tout comme les patins 30, 31, les patins 43, 44 peuvent comporter au moins une tranche d'appui arrière transversale 50 en matériau amortisseur.The pads 43, 44, with their connecting elbow 45 and their pushing finger and 46, are advantageously made of a damping material, of preferably elastomer, to better dampen shocks. Just like 30, 31, the pads 43, 44 may comprise at least one slice transverse rear support 50 of damping material.

Claims (10)

Appareil à fonctionnement à gaz, dans lequel, sous l'action de l'explosion d'un mélange d'air et de gaz dans une chambre (15) fermée par l'intermédiaire d'un manchon de chambre (1) et d'une cage (6) lors de la mise en appui de l'appareil, un piston (17) est propulsé dans un cylindre (2) pour entraíner un élément, caractérisé par le fait que le manchon de chambre (1) et le cylindre (2) sont agencés pour que, lors de la fermeture de l'appareil, le manchon de chambre (1) vienne en butée contre le cylindre (2).Gas-operated apparatus, in which, under the action of the explosion of a mixture of air and gas in a chamber (15) closed via a chamber sleeve (1) and a cage (6) when the device is in abutment, a piston (17) is propelled into a cylinder (2) to drive an element, characterized in that the chamber sleeve (1) and the cylinder ( 2) are arranged so that, when closing the device, the chamber sleeve (1) abuts against the cylinder (2). Appareil selon la revendication 1, dans lequel le manchon de chambre (1) comporte au moins une goupille (33) de liaison du manchon de chambre (1) et de la cage (6).Apparatus according to claim 1, wherein the chamber sleeve (1) has at least one pin (33) connecting the sleeve of chamber (1) and cage (6). Appareil selon l'une des revendications 1 et 2, dans lequel la cage (6) et le manchon de chambre (1) sont liés avec jeu en coulissement.Apparatus according to one of claims 1 and 2, wherein the cage (6) and the chamber sleeve (1) are slidably connected. Appareil selon la revendication 3, dans lequel le manchon de chambre (1) comporte au moins un patin d'appui (30, 31) disposé pour venir en butée contre une oreille d'appui (11) du cylindre (2).Apparatus according to claim 3, wherein the chamber sleeve (1) comprises at least one support pad (30, 31) arranged to come into abutment against a bearing lug (11) of the cylinder (2). Appareil selon l'une des revendications 3 et 4, dans lequel le manchon de chambre (1) comporte au moins une oreille (34) servant d'appui à un ressort d'ouverture (13), en appui aussi contre une joue (12) du cylindre (2), ainsi que d'organe de poussée mutuelle de l'un par l'autre du manchon de chambre (1) et de la cage (6).Apparatus according to one of claims 3 and 4, wherein the sleeve chamber (1) has at least one lug (34) serving as a support for a opening spring (13), also bearing against a cheek (12) of the cylinder (2), as well as mutual thrust member of each other of the sleeve of chamber (1) and cage (6). Appareil selon l'une des revendications 3 à 5, dans lequel le jeu de coulissement relatif de la cage (6) et du manchon de chambre (1) s'étend sur une course de longueur égale à la distance séparant une oreille d'appui et de poussée (34) et la goupille de liaison associée (33).Apparatus according to one of claims 3 to 5, wherein the set of relative sliding of the cage (6) and the chamber sleeve (1) extends on a stroke of length equal to the distance separating a support lug and thrust (34) and the associated connecting pin (33). Appareil selon l'une des revendications 1 et 2, dans lequel le manchon de chambre (1) comporte au moins un patin d'appui, de poussée et de liaison (43, 44) disposé pour venir en butée contre une joue d'appui (12) du cylindre (2) en position de fermeture, au moins une goupille (33) de liaison du manchon de chambre (1), du patin d'appui (43, 44) et de la cage (4) et au moins un ressort (13) d'ouverture de la chambre en butée contre la joue d'appui (12) et le patin d'appui (43, 44). Apparatus according to one of claims 1 and 2, wherein the sleeve chamber (1) has at least one support, push and link (43, 44) arranged to abut against a bearing cheek (12) of the cylinder (2) in the closed position, at least one connecting pin (33) of the chamber sleeve (1), the support pad (43, 44) and the cage (4) and to minus a spring (13) for opening the chamber abutting against the cheek support (12) and the support pad (43, 44). Appareil selon la revendication 7, dans lequel le patin (43, 44) porte un doigt d'appui (46) de section rétrécie agencé pour venir en appui contre la joue (12) du cylindre (2) et recevoir le ressort d'ouverture (13).Apparatus according to claim 7, wherein the pad (43, 44) bears a support finger (46) of narrowed section arranged to bear against the play (12) of the cylinder (2) and receive the opening spring (13). Appareil selon la revendication 8, dans lequel chaque patin d'appui et de poussée (43, 44) comporte un coude de liaison (45), dans lequel est reçue la goupille de liaison (33) associée, lié au doigt (46) en ménageant une gorge (47) de réception d'un bec de liaison (9) de la cage (4).An apparatus according to claim 8, wherein each support pad and thrust (43, 44) has a connecting bend (45), in which the connecting pin (33) associated, linked to the finger (46) while leaving a throat (47) for receiving a connecting spout (9) of the cage (4). Appareil selon l'une des revendications 4 et 7, dans lequel les patins d'appui (30, 31 ; 43, 44) comportent au moins une tranche d'appui arrière transversale (39 ; 50).Apparatus according to one of claims 4 and 7, wherein the pads (30, 31; 43, 44) comprise at least one rear support slice transverse (39; 50).
EP04291868A 2003-07-29 2004-07-23 Fastening tool with piston driven by gas Active EP1502709B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0309321 2003-07-29
FR0309321A FR2858261B1 (en) 2003-07-29 2003-07-29 GAS OPERATING APPARATUS FOR DRIVING A PISTON ELEMENT

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EP1502709A1 true EP1502709A1 (en) 2005-02-02
EP1502709B1 EP1502709B1 (en) 2006-11-29

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US (1) US7121441B2 (en)
EP (1) EP1502709B1 (en)
JP (1) JP2005046998A (en)
CN (1) CN100346934C (en)
AT (1) ATE346723T1 (en)
AU (1) AU2004203075B2 (en)
CA (1) CA2473635C (en)
DE (1) DE602004003433T2 (en)
DK (1) DK1502709T3 (en)
ES (1) ES2277220T3 (en)
FR (1) FR2858261B1 (en)
NZ (1) NZ534024A (en)

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JP5652320B2 (en) * 2011-05-11 2015-01-14 マックス株式会社 Driving tool
EP3199301A1 (en) * 2016-02-01 2017-08-02 HILTI Aktiengesellschaft Combustion chamber and driving tool
CA2969392C (en) * 2016-06-08 2022-11-22 Tti (Macao Commercial Offshore) Limited Gas spring fastener driver
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DE602004003433D1 (en) 2007-01-11
DK1502709T3 (en) 2007-03-26
CA2473635C (en) 2008-03-25
CN1575935A (en) 2005-02-09
AU2004203075B2 (en) 2007-01-25
FR2858261B1 (en) 2005-09-09
US20050023320A1 (en) 2005-02-03
US7121441B2 (en) 2006-10-17
ES2277220T3 (en) 2007-07-01
CN100346934C (en) 2007-11-07
ATE346723T1 (en) 2006-12-15
JP2005046998A (en) 2005-02-24
NZ534024A (en) 2005-03-24
EP1502709B1 (en) 2006-11-29
DE602004003433T2 (en) 2007-10-31
AU2004203075A1 (en) 2005-02-17
FR2858261A1 (en) 2005-02-04
CA2473635A1 (en) 2005-01-29

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