EP0567370A1 - Apparatus for attaching fasteners including a percussion bolt, a ratchet mechanism and a pivotable fastener guide - Google Patents

Apparatus for attaching fasteners including a percussion bolt, a ratchet mechanism and a pivotable fastener guide Download PDF

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Publication number
EP0567370A1
EP0567370A1 EP93400970A EP93400970A EP0567370A1 EP 0567370 A1 EP0567370 A1 EP 0567370A1 EP 93400970 A EP93400970 A EP 93400970A EP 93400970 A EP93400970 A EP 93400970A EP 0567370 A1 EP0567370 A1 EP 0567370A1
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EP
European Patent Office
Prior art keywords
barrel
guide
sleeve
plug
counterweight
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Withdrawn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
EP93400970A
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German (de)
French (fr)
Inventor
Roland Almeras
Patrick Herelier
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.)
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 date
Application filed by Societe de Prospection et dInventions Techniques SPIT SAS filed Critical Societe de Prospection et dInventions Techniques SPIT SAS
Publication of EP0567370A1 publication Critical patent/EP0567370A1/en
Withdrawn legal-status Critical Current

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    • 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
    • B25C1/10—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge
    • B25C1/18—Details and accessories, e.g. splinter guards, spall minimisers
    • B25C1/188—Arrangements at the forward end of the barrel, e.g. splinter guards, spall minimisers, safety arrangements, silencers, bolt retainers

Definitions

  • the present invention relates to an apparatus for fitting fasteners, comprising a barrel, a counterweight movable in the barrel under the action of combustion gases of a propellant charge for driving a fastener, a counterweight ratchet, an element guide mounted at the front of the barrel to pivot about an axis orthogonal to that of the barrel and to be able to load an element from the rear towards the front.
  • the buffers are loaded from the front, or the mouth, devices and it is not always satisfactory. Just before firing, the buffers are indeed already in contact with the support material, and not with the counterweight, or piston, so that at the time of firing, they are not communicated any initial speed.
  • the apparatus of FR-A-2409826 which is indeed a device for indirect fire, with counterweight and with ratchet for recalling the counterweight, comprises a buffer guide mounted on a plug screwed into the barrel and pivoting automatically under the action of '' a sleeve for maneuvering, opening and closing the barrel, mounted sliding on the cap.
  • the apparatus of US-A-4349141 which is also a device for indirect fire with a counterweight, but not with a ratchet for return of the counterweight, comprises a buffer guide mounted to pivot automatically in an operating sleeve, opening and barrel closure, mounted sliding on the barrel. It is the buffer guide which, when closed, recalls the counterweight in the firing position.
  • the apparatus of FR-A-1531056 is also a device for indirect fire with a counterweight, with a buffer guide mounted to pivot on a sleeve mounted sliding on the barrel, and without return pawl, the counterweight being recalled in the firing position when closing by the fastening elements themselves.
  • FR-A-2336216 is arranged to provide a solution to the problem of the propulsion of the threaded buffers, insofar as it comprises a flyweight rod whose front end is hollowed out to receive the threaded head of the buffers and thus ensure, during the firing, guidance and initial speed.
  • the present invention aims to provide an apparatus combining the advantages of those of the prior art presented above without having the disadvantages.
  • the present invention relates to an apparatus of the type mentioned at the start, characterized in that the element guide is mounted movable in axial translation relative to the barrel and arranged to move back in the firing position towards the barrel and cover the front end. of the shaped counterweight so as to cover the head with a fastening element previously introduced into the guide.
  • the apparatus of the invention thus ensures perfect guidance and an initial speed of the fastening elements, including fastening elements with threaded head.
  • the invention applies particularly well to a device with power adjustment, that is to say with an adjustable position of the counterweight relative to the barrel at the time of firing, for example of the type described in FR -A-2620368.
  • the element guide is mounted mobi the in translation in a rocker pivotally mounted on said axis which passes through an operating sleeve slidably mounted on the barrel and a plug fixed to the barrel and arranged to receive the element guide.
  • a tilting lever is provided integral in translation with the plug and on which the operating sleeve is slidably mounted.
  • means are provided arranged in the maneuvering sleeve and arranged to cooperate with the plug to temporarily hold the sleeve in the open position, as well as other means arranged in the maneuvering sleeve and arranged to cooperate with the cap to limit the sliding of the sleeve.
  • the rocker comprises rocking means arranged to cooperate with a cam of the rocking lever and cause the rocker to rock under the action of the sliding of the operating sleeve on the rocking lever.
  • the device for attaching fasteners to the drawing is a device similar to that which is described in document FR-A-8712755 to which the reader will therefore wish to refer for further details.
  • the device comprises a barrel 1, mounted sliding in a barrel holder 2, a firing mechanism 3 and a counterweight 4 mounted sliding in the barrel 1 for, under the action of the combustion gases of a propellant charge 5 , drive a fixing element, or buffer, 6 in a support material 7 intended to receive it.
  • the device is provided with means 8 for return of the counterweight comprising a return pawl 9 and an associated set of millings 10 on the barrel 1.
  • the counterweight 4 comprises a head 11 and a rod 12 whose front end comprises a housing 13 for receiving the head 14 of the pads 6.
  • the pad 6 shown in Figures 1 and 3 has a threaded head 14 and extended by a rod 15 carrying a retaining and guide washer 16.
  • the apparatus comprises still, at the front of the barrel 1, an assembly 17 for guiding the buffer and cocking which comprises a plug 18, an operating sleeve 19, a rocker 20 and an element guide, or buffer guide, 21 mounted in the flip-flop 20 so that it can be tilted and receive a buffer 6 introduced from the rear towards the front.
  • the plug 18 comprises, at the rear, a narrowed portion 22 externally threaded and screwed into the front portion of the barrel.
  • the plug 18 comprises a front portion 23 of enlarged opening to receive the buffer guide 21 (FIG. 3).
  • the sleeve 19 is slidably mounted on the plug 18 and the barrel 1.
  • a housing 24 for receiving a mounting lock 25 open on the rear, for the introduction of the lock, and opening laterally through an opening 54, for the passage of the head 26 of the lock.
  • the lock 25 in the form of a lever, is provided with a foot 27 engaged in a groove 28 of the barrel 1 under the action of a spring 29. The lock 25 ensures the immobilization in rotation of the sleeve 19 on the barrel 1 .
  • the sleeve 19, at the front 30, has a U-shaped cup, crossed by an axis 31, orthogonal to the axis of the barrel 32, on which the rocker 20 is mounted.
  • a groove 33 (FIG. 4) is provided in the sleeve 19 for the relative sliding of a tilting lever 34 in the sleeve 19.
  • the sleeve 19 also has a peripheral groove 35 in which is disposed an elastic ring 36 for holding a ball 37 housed in an orifice in the sleeve but can protrude into a cavity 38 of the plug 18 to temporarily hold the sleeve 19 on the plug 18 in a defined open position ( Figure 4).
  • a pusher 39 housed in another opening of the sleeve 19 and subjected to the action of the rod 36, protrudes in a groove 40 of the plug 18 in order to secure in rotation the sleeve and the plug and limit the sliding stroke of the sleeve on the plug (figure 2).
  • the lever 34 which can slide in the groove 33 of the sleeve, has, at the rear, a curved foot 41, engaged in a groove 42 of the plug 18 to secure the lever, the plug and the sliding barrel, and, at the front, a cam 43 for pivoting the rocker 20 (Figure 3).
  • the rocker 20, pivotally mounted around the axis 31 of the sleeve 19, has a wide peripheral rib 44, intended to cooperate with the cam 43 of the lever 34 to cause it to tilt, and a portion of transverse end skirt 45 providing a support shoulder of a return spring 46 in the non-tilted position of the lever 20 (FIG. 4).
  • the scale 20 has a passage bore of the buffer guide 21, both with double internal and external diameters respectively for the reception of a return spring 47 bearing against an internal and rear annular shoulder 48 of the rocker and an external and front annular shoulder 49 of the buffer guide 21 ( Figure 3).
  • the buffer guide 21 carries an elastic ring 50 in a transverse peripheral groove 51, serving as a sliding limiter.
  • the buffer guide 21, free to rotate in the rocker 20, is mounted therein sliding between an open position, tilted or not, in which it is returned by the spring 47 until the rod 50 comes into abutment in the bottom of a groove 52 of the rocker 20, and a position of abutment from the front, in which it abuts, from the rear, against the shoulder 53 formed by the front portion 23 of opening enlarged plug 18.
  • FIG. 1 the device is shown in the closed position, ready for arming.
  • a buffer 6 has been engaged in the buffer guide 21, the rocker 20 has been tilted by the spring 46 in the extension of the barrel 1.
  • the ball 37 by the backward movement of the operating sleeve 19, has come out of the imprint 38 of the plug 18 authorizing the relative sliding of the sleeve 19, and therefore of the lever 20, and of the plug 18, and therefore of the lever 34, to release the rib 44, of the lever 20, of the cam 43 of the lever 34.
  • the buffer guide 21 has approached the front of the counterweight 4 by a distance d corresponding substantially to the power adjustment stroke to which the counterweight is subjected, here shown in maximum power.
  • Figure 3 the device is shown in the position of abutment against the support 7, ready to fire.
  • the buffer guide 21 has been pushed back, first into abutment against the plug 18 and then beyond to drive with it the plug and the barrel in the cocking position of the firing mechanism 3.
  • the buffer 6, held by the washer 16 is introduced, by its head, into the front housing 13 of the counterweight 4, until it stops against the bottom of the housing.
  • the device is shown in the open position, in which a fixing element can be introduced into the buffer guide 21.
  • a fixing element can be introduced into the buffer guide 21.
  • the user To perform an opening movement, intended in particular to reposition the counterweight 4 to the using the pawl 9, the user, having grasped the sleeve 19, pulls it forward. In this movement, the counterweight 4 moves back into the barrel 1 (in fact, it is the barrel which advances), the sleeve 19 slides on the plug 18 and the barrel 1 forwards, until the pusher 39 either in abutment against the front bottom of its groove 40 and the ball 37 has returned to engage on the imprint 38 of the plug 18, and the buffer guide 21, under the action of the spring 47 escapes the counterweight 4 and the plug 23.

Abstract

The apparatus includes a barrel (1), a percussion bolt (4) which can move in the barrel to entrain a fastener (6), a ratchet (29) for returning the percussion bolt and a guide element (21) mounted so that it can pivot at the front of the barrel in order to load a fastener (6) therein from back to front. The guide (21) can move in axial translation with respect to the barrel (1) and can retract in the firing position towards the barrel (1) and cover the front end of the percussion bolt (4) which is therefore shaped (13) to cover the head (14) of a fastener (6) which has been inserted beforehand into the guide (21). The apparatus of the invention is well suited to fitting plugs in materials made of steel or of concrete. <IMAGE>

Description

La présente invention concerne un appareil pour la pose d'éléments de fixation, comportant un canon, une masselotte mobile dans le canon sous l'action de gaz de combustion d'une charge propulsive pour l'entraînement d'un élément de fixation, un cliquet de rappel de masselotte, un guide-élément monté à l'avant du canon pour pivoter autour d'un axe orthogonal à celui du canon et pouvoir y charger un élément de l'arrière vers l'avant.The present invention relates to an apparatus for fitting fasteners, comprising a barrel, a counterweight movable in the barrel under the action of combustion gases of a propellant charge for driving a fastener, a counterweight ratchet, an element guide mounted at the front of the barrel to pivot about an axis orthogonal to that of the barrel and to be able to load an element from the rear towards the front.

Dans la plupart des appareils de pose, ou de scellement, d'éléments de fixation, ou tampons, en parti- culierdans des matériaux supports en acier ou en béton, le chargement des tampons s'effectue par l'avant, ou la bouche, des appareils et ce n'est pas toujours satisfaisant. Juste avant le tir, les tampons sont en effet déjà en contact avec le matériau support, et pas avec la masselotte, ou piston, si bien qu'au moment du tir, il ne leur est communiqué aucune vitesse initiale.In most devices for fitting, or sealing, fasteners or buffers, in particular in steel or concrete support materials, the buffers are loaded from the front, or the mouth, devices and it is not always satisfactory. Just before firing, the buffers are indeed already in contact with the support material, and not with the counterweight, or piston, so that at the time of firing, they are not communicated any initial speed.

On a déjà proposé des appareils qui pallient cet inconvénient, à chargement des tampons de l'arrière vers l'avant, à travers une lumière ménagée dans le canon. Mais cette solution n'offre pas un guidage et une sécurité suffisants.Devices have already been proposed which overcome this drawback, by loading the buffers from the rear to the front, through a light provided in the barrel. However, this solution does not offer sufficient guidance and security.

Les meilleures solutions proposées jusqu'ici sont celles des appareils pourvus d'un guide-tampon basculant, comme ceux de FR-A-1531056, US-A-4349141, FR-A-2409826.The best solutions proposed so far are those of devices provided with a tilting buffer guide, such as those of FR-A-1531056, US-A-4349141, FR-A-2409826.

L'appareil de FR-A-2409826, qui est bien un appareil à tir indirect, à masselotte et à cliquet de rappel de masselotte, comporte un guide-tampon monté sur un bouchon vissé dans le canon et pivotant automatiquement sous l'action d'un manchon de manoeuvre, d'ouverture et de fermeture du canon, monté coulissant sur le bouchon.The apparatus of FR-A-2409826, which is indeed a device for indirect fire, with counterweight and with ratchet for recalling the counterweight, comprises a buffer guide mounted on a plug screwed into the barrel and pivoting automatically under the action of '' a sleeve for maneuvering, opening and closing the barrel, mounted sliding on the cap.

L'appareil de US-A-4349141, qui est bien aussi un appareil à tir indirect à masselotte, mais pas à cliquet de rappel de masselotte, comporte un guide-tampon monté pour pivoter automatiquement dans un manchon de manoeuvre, d'ouverture et de fermeture du canon, monté coulissant sur le canon. C'est le guide-tampon qui, lors de la fermeture, rappelle la masselotte en position de tir.The apparatus of US-A-4349141, which is also a device for indirect fire with a counterweight, but not with a ratchet for return of the counterweight, comprises a buffer guide mounted to pivot automatically in an operating sleeve, opening and barrel closure, mounted sliding on the barrel. It is the buffer guide which, when closed, recalls the counterweight in the firing position.

L'appareil de FR-A-1531056 est aussi un appareil à tir indirect à masselotte, avec un guide-tampon monté pour pivoter sur un manchon monté coulissant sur le canon, et sans cliquet de rappel, la masselotte étant rappelée en position de tir lors de la fermeture par les éléments de fixation eux-mêmes.The apparatus of FR-A-1531056 is also a device for indirect fire with a counterweight, with a buffer guide mounted to pivot on a sleeve mounted sliding on the barrel, and without return pawl, the counterweight being recalled in the firing position when closing by the fastening elements themselves.

Ces derniers appareils conviennent bien au scellement de tampons dits à "tête de rivet", qui peuvent être entraînés à une vitesse initiale non nulle par une masselotte à section de tige importante, la même que celle de la tête des tampons, ce qui est propice à une bonne fixation. Mais ils sont beaucoup moins bien adaptés aux tampons pourvus d'un filetage, ou à tête filetée, et surtout à tête filetée de petite section. Dans ce cas, les tampons doivent être rehaussés d'une coiffe de guidage qui n'assure pas toujours pleinement son rôle et qu'il est souvent difficile de retirer après fixation. Alternativement, on peut réduire de façon correspondante la section de passage du guide-tampon ainsi que la section de la tige de la masselotte, mais avec le risque, alors, que la tige de masselotte ne se torde au moment du tir.These latter devices are well suited for sealing so-called "rivet head" pads, which can be driven at a non-zero initial speed by a counterweight with a large rod section, the same as that of the head of the pads, which is favorable. to a good fixation. But they are much less well suited to tampons provided with a thread, or with a threaded head, and especially with a threaded head of small section. In this case, the pads must be enhanced with a guide cap which does not always fully fulfill its role and which is often difficult to remove after fixing. Alternatively, it is possible to correspondingly reduce the passage section of the buffer guide as well as the section of the counterweight rod, but with the risk, then, that the counterweight rod will twist when fired.

FR-A-2336216 est agencé pour apporter une solution au problème de la propulsion des tampons filetés, dans la mesure où il comporte une tige de masselotte dont l'extrémité avant est évidée pour recevoir la tête filetée des tampons et assurer ainsi, lors du tir, guidage et vitesse initiale.FR-A-2336216 is arranged to provide a solution to the problem of the propulsion of the threaded buffers, insofar as it comprises a flyweight rod whose front end is hollowed out to receive the threaded head of the buffers and thus ensure, during the firing, guidance and initial speed.

Mais l'alimentation d'un élément de fixation dans l'appareil de FR-A-2336216 s'effectue par sa bouche à l'aide d'un poussoir monté basculant, ce qui nécessite une opération manuelle de la part de l'opérateur.But the supply of a fixing element in the apparatus of FR-A-2336216 is carried out by its mouth using a push-button mounted tilting, which requires a manual operation on the part of the operator .

La présente invention vise à proposer un appareil réunissant les avantages de ceux de l'art antérieur présenté ci-dessus sans en avoir les inconvénients.The present invention aims to provide an apparatus combining the advantages of those of the prior art presented above without having the disadvantages.

Pour cela, la demanderesse a cherché à perfectionner l'appareil du type de celui de FR-A-2409826 mentionné au début. Conformer la masselotte de cet appareil comme celle de l'appareil de FR-A-2336216 ne suffisait pas pour assurer le guidage des éléments dont la tête, au moment de la mise à feu, serait restée à l'extérieur de la tige de masselotte. Le problème était de faire reculer le guide-élément vers le canon et la masselotte et de le rendre mobile en translation axiale par rapport au canon, comme dans l'appareil de US-A-4349141. Mais dans ce dernier appareil, dans lequel le guide-élément est agencé pour reculer vers le canon pour permettre l'armement, au moment de la mise en appui et de la mise à feu, la tête des éléments de fixation reste toujours à l'extérieur de la masselotte, puisque c'est le guide qui rapelle la masselotte en position de tir. En outre, il s'agit d'un appareil dans lequel la position relative de l'avant de la masselotte par rapport à l'avant du canon ne bouge pas, pour permettre le mouvement de fermeture du guide ou le rappel de la masselotte.For this, the applicant sought to improve the device of the type of that of FR-A-2409826 mentioned at the start. Conforming the counterweight of this apparatus like that of the apparatus of FR-A-2336216 was not sufficient to ensure the guiding of the elements whose head, at the time of ignition, would have remained outside of the counterweight rod . The problem was to move the element guide back towards the barrel and the counterweight and to make it mobile in axial translation relative to the barrel, as in the apparatus of US-A-4349141. But in this last device, in which the element-guide is arranged to move back towards the barrel to allow the arming, at the time of the support and firing, the head of the fixing elements always remains at outside of the counterweight, since it is the guide which reminds the counterweight in the firing position. In addition, it is a device in which the relative position of the front of the counterweight relative to the front of the barrel does not move, to allow the closing movement of the guide or the return of the counterweight.

Finalement, la présente invention concerne un appareil du type mentionné au début, caractérisé par le fait que le guide-élément est monté mobile en translation axiale par rapport au canon et agencé pour reculer en position de tir vers le canon et coiffer l'extrémité avant de la masselotte conformée pour alors coiffer la tête d'un élément de fixation préalablement introduit dans le guide.Finally, the present invention relates to an apparatus of the type mentioned at the start, characterized in that the element guide is mounted movable in axial translation relative to the barrel and arranged to move back in the firing position towards the barrel and cover the front end. of the shaped counterweight so as to cover the head with a fastening element previously introduced into the guide.

L'appareil de l'invention assure ainsi un parfait guidage et une vitesse initiale des éléments de fixation, y compris d'éléments de fixation à tête filetée.The apparatus of the invention thus ensures perfect guidance and an initial speed of the fastening elements, including fastening elements with threaded head.

L'invention s'applique particulièrement bien à un appareil à réglage de puissance, c'est-à-dire à position réglable de la masselotte par rapport au canon au moment de la mise à feu, par exemple du type de celui décrit dans FR-A-2620368.The invention applies particularly well to a device with power adjustment, that is to say with an adjustable position of the counterweight relative to the barrel at the time of firing, for example of the type described in FR -A-2620368.

De préférence, le guide-élément est monté mobile en translation dans une bascule montée pivotante sur ledit axe qui traverse un manchon de manoeuvre monté coulissant sur le canon et un bouchon fixé au canon et agencé pour recevoir le guide-élément.Preferably, the element guide is mounted mobi the in translation in a rocker pivotally mounted on said axis which passes through an operating sleeve slidably mounted on the barrel and a plug fixed to the barrel and arranged to receive the element guide.

Avantageusement, il est prévu un levier de basculement solidaire en translation du bouchon et sur lequel le manchon de manoeuvre est monté coulissant.Advantageously, a tilting lever is provided integral in translation with the plug and on which the operating sleeve is slidably mounted.

Avantageusement encore, il est prévu des moyens disposés dans le manchon de manoeuvre et agencés pour coopérer avec le bouchon pour maintenir de façon provisoire le manchon en position d'ouverture ainsi que d'autres moyens disposés dans le manchon de manoeuvre et agencés pour coopérer avec le bouchon pour limiter le coulissement du manchon.Advantageously also, means are provided arranged in the maneuvering sleeve and arranged to cooperate with the plug to temporarily hold the sleeve in the open position, as well as other means arranged in the maneuvering sleeve and arranged to cooperate with the cap to limit the sliding of the sleeve.

De préférence, la bascule comporte des moyens de basculement agencés pour coopérer avec une came du levier de basculement et faire basculer la bascule sous l'action du coulissement du manchon de manoeuvre sur le levier de basculement.Preferably, the rocker comprises rocking means arranged to cooperate with a cam of the rocking lever and cause the rocker to rock under the action of the sliding of the operating sleeve on the rocking lever.

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

  • - la figure 1 est une vue en coupe axiale de l'appareil, en position de fermeture, prêt pour l'armement ;
  • - la figure 2 est une vue en coupe transversale selon la ligne II-II de la figure 1 ;
  • - la figure 3 est une vue en coupe axiale de l'ensemble de guidage de tampon et d'armement de l'appareil de la figure 1, en position de mise en appui, prêt au tir ;
  • - la figure 4 est une vue en coupe axiale de l'ensemble de la figure 3, en position d'ouverture et
  • - la figure 5 est une vue en coupe axiale du verrou de montage de l'ensemble des figures 3 et 4.
The invention will be better understood with the aid of the following description of the preferred embodiment of the apparatus with reference to the appended drawing, in which:
  • - Figure 1 is an axial sectional view of the device, in the closed position, ready for arming;
  • - Figure 2 is a cross-sectional view along line II-II of Figure 1;
  • - Figure 3 is an axial sectional view of the buffer guide and arming assembly of the device of Figure 1, in the abutment position, ready to fire;
  • FIG. 4 is a view in axial section of the assembly of FIG. 3, in the open position and
  • FIG. 5 is a view in axial section of the mounting lock of the assembly of FIGS. 3 and 4.

L'appareil de pose d'éléments de fixation du dessin est un appareil similaire à celui qui est décrit dans le document FR-A-8712755 auquel le lecteur voudra donc bien se reporter pour de plus amples précisions.The device for attaching fasteners to the drawing is a device similar to that which is described in document FR-A-8712755 to which the reader will therefore wish to refer for further details.

L'appareil comprend un canon 1, monté coulissant dans un porte-canon 2, un mécanisme de mise à feu 3 et une masselotte 4 montée coulissante dans le canon 1 pour, sous l'action des gaz de combustion d'une charge propulsive 5, entraîner un élément de fixation, ou tampon, 6 dans un matériau support 7 destiné à le recevoir.The device comprises a barrel 1, mounted sliding in a barrel holder 2, a firing mechanism 3 and a counterweight 4 mounted sliding in the barrel 1 for, under the action of the combustion gases of a propellant charge 5 , drive a fixing element, or buffer, 6 in a support material 7 intended to receive it.

L'appareil est pourvu de moyens 8 de rappel de masselotte comprenant un cliquet de rappel 9 et un ensemble associé de fraisages 10 sur le canon 1. La masselotte 4 comporte une tête 11 et une tige 12 dont l'extrémité avant comporte un logement 13 de réception de la tête 14 des tampons 6. En l'espèce, le tampon 6 représenté sur les figures 1 et 3 a une tête 14 filetée et prolongée par une tige 15 portant une rondelle de retenue et de guidage 16. L'appareil comporte encore, à l'avant du canon 1, un ensemble 17 de guidage de tampon et d'armement qui comporte un bouchon 18, un manchon de manoeuvre 19, une bascule 20 et un guide-élément, ou guide-tampon, 21 monté dans la bascule 20 pour pouvoir ainsi être basculé et recevoir un tampon 6 introduit de l'arrière vers l'avant.The device is provided with means 8 for return of the counterweight comprising a return pawl 9 and an associated set of millings 10 on the barrel 1. The counterweight 4 comprises a head 11 and a rod 12 whose front end comprises a housing 13 for receiving the head 14 of the pads 6. In this case, the pad 6 shown in Figures 1 and 3 has a threaded head 14 and extended by a rod 15 carrying a retaining and guide washer 16. The apparatus comprises still, at the front of the barrel 1, an assembly 17 for guiding the buffer and cocking which comprises a plug 18, an operating sleeve 19, a rocker 20 and an element guide, or buffer guide, 21 mounted in the flip-flop 20 so that it can be tilted and receive a buffer 6 introduced from the rear towards the front.

Le bouchon 18 comporte, à l'arrière, une portion rétrécie 22 extérieurement filetée et vissée dans la portion avant du canon. Pourvu d'un alésage de passage de la masselotte, sensiblement de même section qu'elle, le bouchon 18 comporte une portion avant 23 d'ouverture élargie pour recevoir le guide-tampon 21 (figure 3).The plug 18 comprises, at the rear, a narrowed portion 22 externally threaded and screwed into the front portion of the barrel. Provided with a bore for passage of the counterweight, substantially of the same section as it, the plug 18 comprises a front portion 23 of enlarged opening to receive the buffer guide 21 (FIG. 3).

Le manchon 19 est monté coulissant sur le bouchon 18 et le canon 1. Dans le manchon (figure 5) est ménagé un logement 24 de réception d'un verrou de montage 25 ouvert sur l'arrière, pour l'introduction du verrou, et débouchant latéralement par une ouverture 54, pour le passage de la tête 26 du verrou. Le verrou 25, en forme de levier, est pourvu d'un pied 27 engagé dans une rainure 28 du canon 1 sous l'action d'un ressort 29. Le verrou 25 assure l'immobilisation en rotation du manchon 19 sur le canon 1.The sleeve 19 is slidably mounted on the plug 18 and the barrel 1. In the sleeve (FIG. 5) is provided a housing 24 for receiving a mounting lock 25 open on the rear, for the introduction of the lock, and opening laterally through an opening 54, for the passage of the head 26 of the lock. The lock 25, in the form of a lever, is provided with a foot 27 engaged in a groove 28 of the barrel 1 under the action of a spring 29. The lock 25 ensures the immobilization in rotation of the sleeve 19 on the barrel 1 .

Le manchon 19, à l'avant 30, a une forme de cuvette en U, traversée par un axe 31, orthogonal à l'axe du canon 32, sur lequel est montée la bascule 20. Une rainure 33 (figure 4) est ménagée dans le manchon 19 pour le coulissement relatif d'un levier de basculement 34 dans le manchon 19. Le manchon 19 comporte encore une gorge périphérique 35 dans laquelle est disposé un jonc élastique 36 de maintien d'une bille 37 logée dans un orifice du manchon mais pouvant faire saillie dans une empreinte 38 du bouchon 18 pour maintenir de façon provisoire le manchon 19 sur le bouchon 18 dans une position définie d'ouverture (figure 4). Un poussoir 39, logé dans un autre orifice du manchon 19 et soumis à l'action du jonc 36, fait saillie dans une rainure 40 du bouchon 18 pour solidariser en rotation le manchon et le bouchon et limiter la course de coulissement du manchon sur le bouchon (figure 2).The sleeve 19, at the front 30, has a U-shaped cup, crossed by an axis 31, orthogonal to the axis of the barrel 32, on which the rocker 20 is mounted. A groove 33 (FIG. 4) is provided in the sleeve 19 for the relative sliding of a tilting lever 34 in the sleeve 19. The sleeve 19 also has a peripheral groove 35 in which is disposed an elastic ring 36 for holding a ball 37 housed in an orifice in the sleeve but can protrude into a cavity 38 of the plug 18 to temporarily hold the sleeve 19 on the plug 18 in a defined open position (Figure 4). A pusher 39, housed in another opening of the sleeve 19 and subjected to the action of the rod 36, protrudes in a groove 40 of the plug 18 in order to secure in rotation the sleeve and the plug and limit the sliding stroke of the sleeve on the plug (figure 2).

Le levier 34, qui peut coulisser dans la rainure 33 du manchon, possède, à l'arrière, un pied recourbé 41, engagé dans une rainure 42 du bouchon 18 pour solidariser le levier, le bouchon et le canon en coulissement, et, à l'avant, une came 43 pour le pivotement de la bascule 20 (figure 3).The lever 34, which can slide in the groove 33 of the sleeve, has, at the rear, a curved foot 41, engaged in a groove 42 of the plug 18 to secure the lever, the plug and the sliding barrel, and, at the front, a cam 43 for pivoting the rocker 20 (Figure 3).

La bascule 20, montée pivotante autour de l'axe 31 du manchon 19, comporte une large nervure périphérique 44, destinée à coopérer avec la came 43 du levier 34 pour provoquer son basculement, et une portion de jupe d'extrémité transversale 45 ménageant un épaulement d'appui d'un ressort 46 de rappel en position non basculée de la bascule 20 (figure 4).The rocker 20, pivotally mounted around the axis 31 of the sleeve 19, has a wide peripheral rib 44, intended to cooperate with the cam 43 of the lever 34 to cause it to tilt, and a portion of transverse end skirt 45 providing a support shoulder of a return spring 46 in the non-tilted position of the lever 20 (FIG. 4).

La bascule 20 comporte un alésage de passage du guide-tampon 21, tous deux à double diamètre respectivement interne et externe pour la réception d'un ressort de rappel 47 en appui contre un épaulement annulaire interne et arrière 48 de la bascule et un épaulement annulaire externe et avant 49 du guide-tampon 21 (figure 3).The scale 20 has a passage bore of the buffer guide 21, both with double internal and external diameters respectively for the reception of a return spring 47 bearing against an internal and rear annular shoulder 48 of the rocker and an external and front annular shoulder 49 of the buffer guide 21 (Figure 3).

AI'arrière, le guide-tampon 21 porte un jonc élastique 50 dans une rainure périphérique transversale 51, servant de limiteur de coulissement.At the rear, the buffer guide 21 carries an elastic ring 50 in a transverse peripheral groove 51, serving as a sliding limiter.

Le guide-tampon 21, libre en rotation dans la bascule 20, y est monté coulissant entre une position d'ouverture, basculée ou non, dans laquelle il est rappelé par le ressort 47 jusqu'à ce que le jonc 50 vienne en butée dans le fond d'une gorge 52 de la bascule 20, et une position de mise en appui par l'avant, dans laquelle il est en butée, par l'arrière, contre l'épaulement 53 ménagé par la portion avant 23 d'ouverture élargie du bouchon 18.The buffer guide 21, free to rotate in the rocker 20, is mounted therein sliding between an open position, tilted or not, in which it is returned by the spring 47 until the rod 50 comes into abutment in the bottom of a groove 52 of the rocker 20, and a position of abutment from the front, in which it abuts, from the rear, against the shoulder 53 formed by the front portion 23 of opening enlarged plug 18.

Sur la figure 1, l'appareil est représenté en position de fermeture, prêt pour l'armement. Un tampon 6 a été engagé dans le guide-tampon 21, la bascule 20 a été rebasculée par le ressort 46 dans le prolongement du canon 1. La bille 37, par le retour en arrière du manchon de manoeuvre 19, est sortie de l'empreinte 38 du bouchon 18 autorisant le coulissement relatif du manchon 19, et donc de la bascule 20, et du bouchon 18, et donc du levier 34, pour dégager la nervure 44, de la bascule 20, de la came 43 du levier 34. Dans ce mouvement, le guide-tampon 21 s'est rapproché de l'avant de la masselotte 4 d'une distance d correspondant sensiblement à la course de réglage de puissance à laquelle est soumise la masselotte, ici représentée en puissance maximale.In Figure 1, the device is shown in the closed position, ready for arming. A buffer 6 has been engaged in the buffer guide 21, the rocker 20 has been tilted by the spring 46 in the extension of the barrel 1. The ball 37, by the backward movement of the operating sleeve 19, has come out of the imprint 38 of the plug 18 authorizing the relative sliding of the sleeve 19, and therefore of the lever 20, and of the plug 18, and therefore of the lever 34, to release the rib 44, of the lever 20, of the cam 43 of the lever 34. In this movement, the buffer guide 21 has approached the front of the counterweight 4 by a distance d corresponding substantially to the power adjustment stroke to which the counterweight is subjected, here shown in maximum power.

Sur la figure 3, l'appareil est représenté en position de mise en appui contre le support 7, prêt au tir. Le guide-tampon 21 a été repoussé vers l'arrière, d'abord en butée contre le bouchon 18 puis au-delà pour entraîner avec lui le bouchon et le canon en position d'armement du mécanisme de mise à feu 3. Le tampon 6, maintenu par la rondelle 16, s'est introduit, par sa tête, dans le logement avant 13 de la masselotte 4, jusqu'en butée contre le fond du logement.In Figure 3, the device is shown in the position of abutment against the support 7, ready to fire. The buffer guide 21 has been pushed back, first into abutment against the plug 18 and then beyond to drive with it the plug and the barrel in the cocking position of the firing mechanism 3. The buffer 6, held by the washer 16, is introduced, by its head, into the front housing 13 of the counterweight 4, until it stops against the bottom of the housing.

Sur la figure 4, l'appareil est représenté en position d'ouverture, dans laquelle un élément de fixation peut être introduit dans le guide-tampon 21. Pour effectuer un mouvement d'ouverture, destiné notamment à repositionner la masselotte 4 à l'aide du cliquet 9, l'utilisateur, ayant saisi le manchon 19, le tire vers l'avant. Dans ce mouvement, la masselotte 4 recule dans le canon 1 (en fait, c'est le canon qui avance), le manchon 19 coulisse sur le bouchon 18 et le canon 1 vers l'avant, jusqu'à ce que le poussoir 39 soit en butée contre le fond avant de sa rainure 40 et que la bille 37 soit revenue en prise sur l'empreinte 38 du bouchon 18, et le guide-tampon 21, sous l'action du ressort 47 échappe à la masselotte 4 et au bouchon 23. Au cours de ce mouvement d'ouverture, le levier 34, avec sa came 43, a, contre l'action du ressort 46, fait basculer la bascule 20, par sa nervure 44. L'appareil est alors maintenu dans cette position d'ouverture par la bille 37 en prise sur l'empreinte 38, sous l'action du jonc 36.In Figure 4, the device is shown in the open position, in which a fixing element can be introduced into the buffer guide 21. To perform an opening movement, intended in particular to reposition the counterweight 4 to the using the pawl 9, the user, having grasped the sleeve 19, pulls it forward. In this movement, the counterweight 4 moves back into the barrel 1 (in fact, it is the barrel which advances), the sleeve 19 slides on the plug 18 and the barrel 1 forwards, until the pusher 39 either in abutment against the front bottom of its groove 40 and the ball 37 has returned to engage on the imprint 38 of the plug 18, and the buffer guide 21, under the action of the spring 47 escapes the counterweight 4 and the plug 23. During this opening movement, the lever 34, with its cam 43, has, against the action of the spring 46, causes the rocker 20 to tilt, by its rib 44. The device is then held in this position of opening by the ball 37 engaged on the imprint 38, under the action of the rod 36.

Si l'on veut démonter l'appareil, il suffit de chasser la tête 26 du verrou 25 hors de l'ouverture 54 et faire pivoter le verrou, contre l'action du ressort 29, autour d'une saillie 55 du bouchon, ici adjacente au filetage de la portion 22 du bouchon, pour dégager le pied 27 de la rainure 28 du canon et pouvoir ainsi sortir le verrou de son logement 24.If you want to disassemble the device, simply drive the head 26 of the lock 25 out of the opening 54 and rotate the lock, against the action of the spring 29, around a projection 55 of the plug, here adjacent to the thread of the portion 22 of the plug, to disengage the foot 27 from the groove 28 of the barrel and thus be able to remove the lock from its housing 24.

Claims (10)

1. Appareil pour la pose d'éléments de fixation, comportant un canon (1), une masselotte (4) mobile dans le canon sous l'action de gaz de combustion d'une charge propulsive (5) pour l'entraînement d'un élément de fixation (6), un cliquet (29) de rappel de masselotte, un guide-élément (21) monté à l'avant du canon pour pivoter autour d'un axe (31) orthogonal à celui (32) du canon (1) et pouvoir y charger un élément (6) de l'arrière vers l'avant, caractérisé par le fait que le guide-élément (21) est monté mobile en translation axiale par rapport au canon (1) et agencé pour reculer en position de tir vers le canon (1) et coiffer l'extrémité avant de la masselotte (4) conformée (13) pour alors coiffer la tête (14) d'un élément de fixation (6) préalablement introduit dans le guide (21).1. Apparatus for installing fasteners, comprising a barrel (1), a counterweight (4) movable in the barrel under the action of combustion gases of a propellant charge (5) for driving a fixing element (6), a pawl (29) for return of the counterweight, an element guide (21) mounted at the front of the barrel to pivot around an axis (31) orthogonal to that (32) of the barrel (1) and being able to load an element (6) from the rear towards the front, characterized in that the element guide (21) is mounted movable in axial translation relative to the barrel (1) and arranged to move back in the firing position towards the barrel (1) and cover the front end of the shaped counterweight (4) (13) so as to cover the head (14) with a fixing element (6) previously introduced into the guide (21 ). 2. Appareil selon la revendication 1, dans lequel le guide-élément (21) est monté mobile en translation dans une bacsule (20) montée pivotante sur ledit axe (31) qui traverse un manchon de manoeuvre (19) monté coulissant sur le canon (1) et un bouchon (18) fixé au canon (1) et agencé pour recevoir le guide-élément (21).2. Apparatus according to claim 1, wherein the element-guide (21) is mounted movable in translation in a container (20) pivotally mounted on said axis (31) which passes through an operating sleeve (19) mounted sliding on the barrel (1) and a plug (18) fixed to the barrel (1) and arranged to receive the element guide (21). 3. Appareil selon la revendication 2, dans lequel il est prévu un verrou de montage (25) agencé pour immobiliser en rotation le manchon de manoeuvre (19) sur le canon (1).3. Apparatus according to claim 2, wherein there is provided a mounting lock (25) arranged to immobilize in rotation the operating sleeve (19) on the barrel (1). 4. Appareil selon l'une des revendications 2 et 3, dans lequel il est prévu un levier de basculement (34) solidaire en translation du bouchon (18) et sur lequel le manchon de manoeuvre (19) est monté coulissant.4. Apparatus according to one of claims 2 and 3, wherein there is provided a tilting lever (34) integral in translation with the plug (18) and on which the operating sleeve (19) is slidably mounted. 5. Appareil selon l'une des revendications 2 à 4, dans lequel il est prévu des moyens (37) disposés dans le manchon de manoeuvre (19) et agencés pour coopérer avec le bouchon (18) pour maintenir de façon provisoire le manchon (19) en position d'ouverture.5. Apparatus according to one of claims 2 to 4, wherein there is provided means (37) disposed in the operating sleeve (19) and arranged to cooperate with the plug (18) to temporarily hold the sleeve ( 19) in the open position. 6. Appareil selon l'une des revendications 2 à 5, dans lequel il est prévu d'autres moyens (39) disposés dans le manchon de manoeuvre (19) et agencés pour coopérer avec le bouchon (18) pour limiter le coulissement du manchon (19).6. Apparatus according to one of claims 2 to 5, wherein there is provided other means (39) arranged in the operating sleeve (19) and arranged to cooperate with the plug (18) to limit the sliding of the sleeve (19). 7. Appareil selon l'une des revendications 4 à 6, dans lequel la bascule (20) comporte des moyens de basculement (44) agencés pour coopérer avec une came (43) du levier de basculement (34) et faire basculer la bascule (20) sous l'action du coulissement du manchon de manoeuvre (19) sur le levier de basculement (34).7. Apparatus according to one of claims 4 to 6, wherein the rocker (20) comprises tilting means (44) arranged to cooperate with a cam (43) of the tilting lever (34) and tilt the rocker ( 20) under the action of the sliding of the operating sleeve (19) on the tilting lever (34). 8. Appareil selon l'une des revendications 2 à 7, dans lequel le guide-élément (21) est monté mobile en translation dans la bascule (20) contre l'action de moyens de rappel (47) et il est prévu des moyens (50, 51) pour limiter le coulissement du guide-élément (21) en position d'ouverture.8. Apparatus according to one of claims 2 to 7, wherein the element guide (21) is mounted movable in translation in the rocker (20) against the action of return means (47) and means are provided. (50, 51) to limit the sliding of the element guide (21) in the open position. 9. Appareil selon l'une des revendications 2 à 8, dans lequel la bascule (20) est montée sur le manchon de manoeuvre (19) pour pivoter en position d'ouverture contre l'action de moyens de rappel (46).9. Apparatus according to one of claims 2 to 8, wherein the rocker (20) is mounted on the operating sleeve (19) to pivot in the open position against the action of return means (46). 10. Appareil selon l'une des revendications 1 à 9, dans lequel la position de la masselotte (4) dans le canon (1) est réglable pour régler la puissance de l'appareil.10. Apparatus according to one of claims 1 to 9, wherein the position of the weight (4) in the barrel (1) is adjustable to adjust the power of the device.
EP93400970A 1992-04-24 1993-04-14 Apparatus for attaching fasteners including a percussion bolt, a ratchet mechanism and a pivotable fastener guide Withdrawn EP0567370A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR929205087A FR2690370B1 (en) 1992-04-24 1992-04-24 APPARATUS FOR FIXING FIXING ELEMENTS, SLEEVES, SLEEVE REMINDER RATCHET AND PIVOTING PAD GUIDE.
FR9205087 1992-04-24

Publications (1)

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EP0567370A1 true EP0567370A1 (en) 1993-10-27

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EP93400970A Withdrawn EP0567370A1 (en) 1992-04-24 1993-04-14 Apparatus for attaching fasteners including a percussion bolt, a ratchet mechanism and a pivotable fastener guide

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US (1) US5332140A (en)
EP (1) EP0567370A1 (en)
CA (1) CA2094757C (en)
FR (1) FR2690370B1 (en)

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US5799855A (en) * 1996-02-09 1998-09-01 Illinois Tool Works Inc. Velocity control and nosepiece stabilizer system for combustion powered tools
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AUPP770598A0 (en) * 1998-12-14 1999-01-14 Ramset Fasteners (Aust.) Pty. Limited Power actuated tools
DE10105196B4 (en) * 2001-02-06 2013-09-26 Hilti Aktiengesellschaft setting tool
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EP2923799A1 (en) * 2014-03-28 2015-09-30 HILTI Aktiengesellschaft Fastener driving tool
US10926389B2 (en) * 2018-07-31 2021-02-23 Chung-Heng Lee Powder-actuated tool

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Also Published As

Publication number Publication date
FR2690370B1 (en) 1994-07-29
CA2094757C (en) 1996-12-31
US5332140A (en) 1994-07-26
CA2094757A1 (en) 1993-10-25
FR2690370A1 (en) 1993-10-29

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