EP0779132A1 - Apparatus for attaching fasteners - Google Patents

Apparatus for attaching fasteners Download PDF

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Publication number
EP0779132A1
EP0779132A1 EP96402380A EP96402380A EP0779132A1 EP 0779132 A1 EP0779132 A1 EP 0779132A1 EP 96402380 A EP96402380 A EP 96402380A EP 96402380 A EP96402380 A EP 96402380A EP 0779132 A1 EP0779132 A1 EP 0779132A1
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EP
European Patent Office
Prior art keywords
guide
counterweight
braking
ring
buffer guide
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
EP96402380A
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German (de)
French (fr)
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EP0779132B1 (en
Inventor
Roland Almeras
Frédéric Nayrac
Patrick Herelier
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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 EP0779132A1 publication Critical patent/EP0779132A1/en
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Publication of EP0779132B1 publication Critical patent/EP0779132B1/en
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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
    • 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
    • B25C1/14—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge acting on an intermediate plunger or anvil

Definitions

  • the present invention relates to an apparatus for sealing attachment buffers, with a counterweight intended to be propelled forward in a barrel and to slide in a front part of the apparatus acting as a tampon guide, to drive a tampon and the seal, then be recalled backwards in the firing position, with braking means which are arranged to brake the counterweight only when it slides in one direction and comprising at least one braking ball mounted in a recess of the guide -tampon and arranged to, by cooperation with the counterweight, be pushed radially towards the latter in its sliding in said direction.
  • the invention of the present application is not, in turn, aimed at perfecting the apparatus of EP-A-0 346 275 but at proposing to use the braking ball device as a generally called counterweight return device, at place of the usual click.
  • the invention relates to a sealing device of the type mentioned above, characterized in that the braking means are arranged to push the ball radially towards the counterweight when the device and the backward sliding of the buffer guide.
  • the buffer guide and the counterweight are secured in sliding and the sliding towards the rear of the buffer guide therefore causes the counterweight backwards in the firing position.
  • the braking means are arranged to fasten the sliding guide guide and the counterweight under the action of an opening spring of the device.
  • the braking means are arranged to fasten the sliding guide guide and the counterweight before the complete opening of the device and separate them at the end of support.
  • the braking means comprise the opening spring, bearing against a shoulder of the barrel and against a guide ring integral in sliding with the buffer guide and mounted to slide in a groove of the barrel, and a braking ring, arranged to come into abutment against the front bottom of the groove of the barrel and to secure the buffer guide and the counterweight during the final sliding towards the front of the buffer guide.
  • the guide ring is screwed onto the buffer guide and the braking ring has a rear portion of enlarged internal section preventing any cooperation with the braking ball.
  • the braking means comprise a ring mounted to rotate on the buffer guide, with a recess for receiving the ball, and the counterweight comprises a portion of rod of narrowed section .
  • the apparatus which will now be described is intended to seal a tampon 1 in a support material 2.
  • the apparatus comprises a handle 3, in which are integrated a firing system, with a cylinder head 4, and a system of supply of cartridges 5.
  • a barrel 6, of axis 30, is slidably mounted in a barrel holder 7 integral with the handle 3, of a stroke allowing the passage of the cartridge before firing.
  • This stroke of the barrel is obtained against the action of an opening spring 8, bearing against a washer 9, itself bearing against a shoulder of the barrel holder 7, on the one hand, and against a ring of guide 10 integral with a buffer guide 11, on the other hand.
  • the rear part 6 of the barrel is extended, towards the front, by a part 6 'screwed into the rear part and in which is formed at least one longitudinal groove 12 in which the guide ring 10 is slidably mounted.
  • a flyweight 13 is mounted in the barrel 6,6 'to be propelled forward under the action of the energy of a cartridge 5, slide in the buffer guide 11 and drive the buffer 1 placed in the guide- buffer.
  • the counterweight 13 In its forward movement, at the end of its travel, the counterweight 13 is braked by a damping ring 14, on which its head abuts, the ring 14 itself being in abutment against a centering ring 15.
  • the apparatus comprises a device 16 for returning the counterweight to the firing position comprising, in addition to the buffer guide 11, the guide ring 10, the spring 8 and the front barrel part 6 ′, with its groove 12, a ring of braking 17, and a pair of braking balls 18.
  • the guide ring 10 is screwed onto an annular projection 19 of the buffer guide 11 ( Figure 4).
  • the braking ring 17, slidably mounted on the buffer guide 11, has a rear portion 20 of enlarged inner section relative to that of the front portion corresponding substantially to that of the outer wall of the buffer guide, and it is extended towards the 'front by two lateral support arms 21 extending through slots 25 formed in the annular projection 19. Cutouts 22 formed in the enlarged portion 20 form tongues 23 elastically deformable radially.
  • the buffer guide 11 At the rear of the buffer guide 11 are drilled, diametrically opposite, two recesses 24 in which are housed the braking balls 18.
  • the balls have a diameter substantially equal to that of their receiving housings 24 but greater than the thickness of the buffer guide in which they are drilled.
  • the buffer guide 11 moves back and, at the end of the pressing, it comes into contact with the centering ring 15 against the action of the spring 8 via of the guide ring 10.
  • the braking ring 17 Due to the support of the buffer guide 11 against the centering ring 15, the braking ring 17 has been pushed forward so that it is the enlarged section portion 20 which is located in line with the balls 18 , not pushed back by the ring 17 towards the counterweight 13. Thus, no force being exerted on the balls, no resistance is applied to the rod of the counterweight 13 after ignition. The balls 18 not being in contact with the braking ring 17, they can roll freely on the counterweight rod.
  • the barrel 6,6 ' is driven forward and the cartridge 5 is released.
  • the guide ring 10 is driven forward by driving with it the buffer guide 11.
  • the balls 18 roll on the counterweight 13 without effort and drive the braking ring 17, by the zone connecting its two portions of different sections, until the front end 26 of the ring 17 abuts against the front bottom 27 of the groove 12.
  • the braking ring 17 slides backwards and its front portion, of "narrowed" section, comes into contact with the balls 18, pushes them radially towards the counterweight 13 to exert pressure on the counterweight and thus secure the buffer guide 11 and this flyweight 13.
  • the buffer guide 11 After the introduction of a new buffer 1 into the buffer guide 11, when the apparatus is brought into contact again, against the action of the spring 8, the buffer guide 11, by the ring and the braking balls, drives the counterweight 13 in the firing position, before the centering ring 15 pushes the braking ring 17 forward and thus releases the balls 18 to separate the counterweight 13 from the buffer guide 11.
  • the latter carries, behind the recesses 24 for receiving the braking balls 18, a rod 40 which performs two functions.
  • the first is to prevent, by abutment effect, that the braking ring 17 does not separate from the buffer guide.
  • the second function is to ensure a positive connection between the counterweight and the ring while still serving as a stop for the braking ring 17 which is pushed backwards under the action of the braking balls 18 subjected to the force of the counterweight 13 which, when the device is supported, tends to cause them to rotate.
  • a portion 131 of the rod of the counterweight 13 has a cross section of smaller diameter than that of the bore 111 of the buffer guide 11. Thanks to this, the balls of braking 18 can more easily protrude into the bore 111 without having to overcome the resistance of the counterweight rod. In addition, at the time of implementation support, the reaction of the balls 18 in contact with the counterweight rod 131 is more effective.
  • the counterweight 13 has a portion of rod 131 with a narrowed section
  • the braking ring 17 is rotatably mounted on the buffer guide 11 and in the return position under the action of a torsion spring 117 fixed to the braking ring 17 and to the guide ring 10
  • the braking ring 17 has two internal recesses 217, for partially receiving the braking balls 18 allowing them to disappear and move away from the counterweight rod
  • the braking ring 17 has an outer cam surface 317 intended to cooperate with a finger, fixed in rotation, of the barrel 6, to rotate it against the action of the torsion spring 117.
  • This cam surface is in this case an inclined peripheral ramp, from the rear transverse edge 417 of the ring 17, both on the axis 30 of the device and on a perpendicular plane In this axis 30, that of Figure 7 for example, the finger of the barrel 6 projecting axially forward.
  • the spring 8 drives the guide ring 10 and the buffer guide 11 forward until the front edge 106 of the ring 10 comes into abutment against the front bottom 27 of the groove 12, without neither the braking ring 17 nor the counterweight 13 having been moved relative to the buffer guide 11.
  • the counterweight is released by rotation of the braking ring 17 by the finger of the barrel 6 and spacing of the balls 18 and reception in the recesses 217 of the ring 17.

Abstract

After driving a plug and sealing it, the plunger (13) is returned rearwardly to the firing position. There is a brake arranged so as to brake the plunger only when it slides in one direction and including at least one braking ball mounted in a recess of the plug guide and arranged so as to be driven radially towards the plunger. It cooperates with the plunger, when it slides in the braking direction. The braking devices are arranged to drive the ball radially towards the plunger upon application of the device and rearward sliding of the plug guide.

Description

La présente invention concerne un appareil de scellement de tampons de fixation, à masselotte destinée à être propulsée vers l'avant dans un canon et à coulisser dans une partie avant de l'appareil faisant fonction de guide-tampon, pour entrainer un tampon et le sceller, puis à être rappelée vers l'arrière en position de tir, avec des moyens de freinage qui sont agencés pour ne freiner la masselotte que lors de son coulissement dans une direction et comprenant au moins une bille de freinage montée dans un évidement du guide-tampon et agencée pour, par coopération avec la masselotte, être poussée radialement vers celle-ci dans son coulissement dans ladite direction.The present invention relates to an apparatus for sealing attachment buffers, with a counterweight intended to be propelled forward in a barrel and to slide in a front part of the apparatus acting as a tampon guide, to drive a tampon and the seal, then be recalled backwards in the firing position, with braking means which are arranged to brake the counterweight only when it slides in one direction and comprising at least one braking ball mounted in a recess of the guide -tampon and arranged to, by cooperation with the counterweight, be pushed radially towards the latter in its sliding in said direction.

Un tel appareil est- décrit dans EP-A-0 346 275. Dans cet appareil, la bille de freinage est montée dans un évidement du guide-tampon d'une extension axiale plus grande que son diamètre et un coin fixe pousse la bille vers la masselotte lorsque celle-ci, propulsée vers l'avant, l'entraîne avec elle vers l'avant dans son évidement.Such an apparatus is described in EP-A-0 346 275. In this apparatus, the brake ball is mounted in a recess of the buffer guide with an axial extension greater than its diameter and a fixed wedge pushes the ball towards the counterweight when the latter, propelled forward, drives it with it forward in its recess.

Cet agencement visait à pallier l'inconvénient d'une bille de retenue de masselotte montée dans un évidement d'extension axiale sensiblement égale à son diamètre et soumise à l'action radiale et permanente d'un ressort, même lors du rappel vers l'arrière, donc plus difficile, de la masselotte, tel qu'enseigné par DE-PS-1 058 950.This arrangement was intended to overcome the drawback of a counterweight retaining ball mounted in a recess of axial extension substantially equal to its diameter and subjected to the radial and permanent action of a spring, even during the return towards the rear, therefore more difficult, of the flyweight, as taught by DE-PS-1 058 950.

L'invention de la présente demande vise non pas, à son tour, à perfectionner l'appareil de EP-A-0 346 275 mais à proposer d'utiliser le dispositif à bille de freinage comme dispositif généralement dit de rappel de masselotte, au lieu du cliquet habituel.The invention of the present application is not, in turn, aimed at perfecting the apparatus of EP-A-0 346 275 but at proposing to use the braking ball device as a generally called counterweight return device, at place of the usual click.

A cet effet, l'invention concerne un appareil de scellement du type mentionné ci-dessus, caractérisé par le fait que les moyens de freinage sont agencés pour pousser la bille radialement vers la masselotte lors de la mise en appui de l'appareil et du coulissement vers l'arrière du guide-tampon.To this end, the invention relates to a sealing device of the type mentioned above, characterized in that the braking means are arranged to push the ball radially towards the counterweight when the device and the backward sliding of the buffer guide.

Ainsi, lors de la mise en appui de l'appareil, le guide-tampon et la masselotte sont solidarisés en coulissement et le coulissement vers l'arrière du guide-tampon entraîne donc la masselotte vers l'arrière en position de tir.Thus, when the device is placed in abutment, the buffer guide and the counterweight are secured in sliding and the sliding towards the rear of the buffer guide therefore causes the counterweight backwards in the firing position.

De préférence, les moyens de freinage sont agencés pour solidariser en coulissement le guide-tampon et la masselotte sous l'action d'un ressort d'ouverture de l'appareil.Preferably, the braking means are arranged to fasten the sliding guide guide and the counterweight under the action of an opening spring of the device.

Avantageusement, les moyens de freinage sont agencés pour solidariser en coulissement le guide-tampon et la masselotte avant l'ouverture complète de l'appareil et les désolidariser en fin de mise en appui.Advantageously, the braking means are arranged to fasten the sliding guide guide and the counterweight before the complete opening of the device and separate them at the end of support.

Dans une forme de réalisation intéressante de l'appareil de l'invention, les moyens de freinage comprennent le ressort d'ouverture, en appui contre un épaulement du canon et contre une bague de guidage solidaire en coulissement du guide-tampon et montée pour coulisser dans une rainure du canon, et une bague de freinage, agencée pour venir en butée contre le fond avant de la rainure du canon et solidariser le guide-tampon et la masselotte lors du coulissement final vers l'avant du guide-tampon.In an advantageous embodiment of the device of the invention, the braking means comprise the opening spring, bearing against a shoulder of the barrel and against a guide ring integral in sliding with the buffer guide and mounted to slide in a groove of the barrel, and a braking ring, arranged to come into abutment against the front bottom of the groove of the barrel and to secure the buffer guide and the counterweight during the final sliding towards the front of the buffer guide.

Avantageusement, la bague de guidage est vissée sur le guide-tampon et la bague de freinage comporte une portion arrière de section intérieure élargie empêchant toute coopération avec la bille de freinage.Advantageously, the guide ring is screwed onto the buffer guide and the braking ring has a rear portion of enlarged internal section preventing any cooperation with the braking ball.

Dans une autre forme de réalisation de l'appareil de l'invention, les moyens de freinage comprennent une bague montée rotative sur le guide-tampon, avec un évidement de réception de la bille, et la masselotte comporte une portion de tige de section rétrécie.In another embodiment of the apparatus of the invention, the braking means comprise a ring mounted to rotate on the buffer guide, with a recess for receiving the ball, and the counterweight comprises a portion of rod of narrowed section .

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

  • la figure 1 est une vue en coupe axiale, partielle, d'une première forme de l'appareil, quasiment en fin de mise en appui, préalable à la mise à feu;
  • la figure 2 est une vue en coupe axiale, en position d'ouverture, de l'appareil de la figure 1;
  • la figure 3 est une vue en perspective de la bague de serrage de l'appareil de la figure 1;
  • la figure 4 est une vue en perspective du guide-tampon, avec sa bague de guidage, de l'appareil de la figure 1;
  • la figure 5 est une vue en coupe axiale partielle, d'une deuxième forme de l'appareil, en position d'ouverture;
  • la figure 6 est une vue en coupe axiale partielle, d'une troisième forme de l'appareil, en position d'ouverture et
  • la figure 7 est une vue en coupe de la bague de freinage et du guide-tampon de l'appareil de la figure 6.
The invention will be better understood with the aid of the following description of several embodiments of the apparatus of the invention, with reference to the appended drawing, in which
  • Figure 1 is a partial axial sectional view of a first form of the device, almost at the end of the abutment, prior to firing;
  • Figure 2 is an axial sectional view, in the open position, of the apparatus of Figure 1;
  • Figure 3 is a perspective view of the clamping ring of the apparatus of Figure 1;
  • Figure 4 is a perspective view of the buffer guide, with its guide ring, of the apparatus of Figure 1;
  • Figure 5 is a partial axial sectional view of a second form of the device, in the open position;
  • FIG. 6 is a view in partial axial section, of a third form of the device, in the open position and
  • FIG. 7 is a sectional view of the braking ring and of the buffer guide of the device of FIG. 6.

L'appareil qui va maintenant être décrit est destiné à sceller un tampon 1 dans un matériau support 2. L'appareil comporte une poignée 3, à laquelle sont intégrés un système de mise à feu, avec une culasse 4, et un système d'alimentation de cartouches 5. Un canon 6, d'axe 30, est monté coulissant dans un porte-canon 7 solidaire de la poignée 3, d'une course permettant le passage de la cartouche avant la mise à feu. Cette course du canon est obtenue contre l'action d'un ressort d'ouverture 8, en appui contre une rondelle 9, elle-même en appui contre un épaulement du porte-canon 7, d'une part, et contre une bague de guidage 10 solidaire d'un guide-tampon 11, d'autre part. La partie arrière 6 du canon est prolongée, vers l'avant, par une partie 6' vissée dans la partie arrière et dans laquelle est ménagée au moins une rainure longitudinale 12 dans laquelle la bague de guidage 10 est montée coulissante.The apparatus which will now be described is intended to seal a tampon 1 in a support material 2. The apparatus comprises a handle 3, in which are integrated a firing system, with a cylinder head 4, and a system of supply of cartridges 5. A barrel 6, of axis 30, is slidably mounted in a barrel holder 7 integral with the handle 3, of a stroke allowing the passage of the cartridge before firing. This stroke of the barrel is obtained against the action of an opening spring 8, bearing against a washer 9, itself bearing against a shoulder of the barrel holder 7, on the one hand, and against a ring of guide 10 integral with a buffer guide 11, on the other hand. The rear part 6 of the barrel is extended, towards the front, by a part 6 'screwed into the rear part and in which is formed at least one longitudinal groove 12 in which the guide ring 10 is slidably mounted.

Une masselotte 13 est montée dans le canon 6,6' pour être propulsée vers l'avant sous l'action de l'énergie d'une cartouche 5, coulisser dans le guide-tampon 11 et entrainer le tampon 1 placé dans le guide-tampon. Dans son mouvement vers l'avant, en bout de course, la masselotte 13 est freinée par une bague d'amortissement 14, sur laquelle sa tête vient en butée, la bague 14 étant elle-même en appui contre une bague de centrage 15.A flyweight 13 is mounted in the barrel 6,6 'to be propelled forward under the action of the energy of a cartridge 5, slide in the buffer guide 11 and drive the buffer 1 placed in the guide- buffer. In its forward movement, at the end of its travel, the counterweight 13 is braked by a damping ring 14, on which its head abuts, the ring 14 itself being in abutment against a centering ring 15.

L'appareil comporte un dispositif 16 de rappel de masselotte en position de tir comprenant, outre le guide-tampon 11, la bague de guidage 10, le ressort 8 et la partie de canon avant 6', avec sa rainure 12, une bague de freinage 17, et une paire de billes de freinage 18.The apparatus comprises a device 16 for returning the counterweight to the firing position comprising, in addition to the buffer guide 11, the guide ring 10, the spring 8 and the front barrel part 6 ′, with its groove 12, a ring of braking 17, and a pair of braking balls 18.

La bague de guidage 10 est vissée sur une saillie annulaire 19 du guide-tampon 11 (figure 4).The guide ring 10 is screwed onto an annular projection 19 of the buffer guide 11 (Figure 4).

La bague de freinage 17, montée coulissante sur le guide tampon 11, comporte une portion arrière 20 de section intérieure élargie par rapport à celle de la portion avant correspondant sensiblement à celle de la paroi extérieure du guide-tampon, et elle est prolongée vers l'avant par deux bras latéraux d'appui 21 s'étendant à travers des lumières 25 ménagées dans la saillie annulaire 19. Des découpes 22 ménagées dans la portion élargie 20 forment des languettes 23 déformables élastiquement radialement.The braking ring 17, slidably mounted on the buffer guide 11, has a rear portion 20 of enlarged inner section relative to that of the front portion corresponding substantially to that of the outer wall of the buffer guide, and it is extended towards the 'front by two lateral support arms 21 extending through slots 25 formed in the annular projection 19. Cutouts 22 formed in the enlarged portion 20 form tongues 23 elastically deformable radially.

A l'arrière du guide-tampon 11 sont percés, diamétralement opposés, deux évidements 24 dans lesquels sont logées les billes de freinage 18. Les billes ont un diamètre sensiblement égal à celui de leurs logements de réception 24 mais plus grand que l'épaisseur du guide-tampon dans lequel ils sont percés.At the rear of the buffer guide 11 are drilled, diametrically opposite, two recesses 24 in which are housed the braking balls 18. The balls have a diameter substantially equal to that of their receiving housings 24 but greater than the thickness of the buffer guide in which they are drilled.

Lorsqu'on met l'appareil en appui contre le matériau 2, le guide-tampon 11 recule et, en fin de mise en appui, il vient en contact avec la bague de centrage 15 contre l'action du ressort 8 par l'intermédiaire de la bague de guidage 10.When the device is pressed against the material 2, the buffer guide 11 moves back and, at the end of the pressing, it comes into contact with the centering ring 15 against the action of the spring 8 via of the guide ring 10.

Du fait de l'appui du guide-tampon 11 contre la bague de centrage 15, la bague de freinage 17 a été repoussée vers l'avant de sorte que c'est la partie de section élargie 20 qui se trouve au droit des billes 18, non repoussées par la bague 17 vers la masselotte 13. Ainsi, aucun effort n'étant exercé sur les billes, aucune résistance n'est appliquée sur la tige de la masselotte 13 après la mise à feu. Les billes 18 n'étant pas en contact avec la bague de freinage 17, elles peuvent rouler librement sur la tige de masselotte.Due to the support of the buffer guide 11 against the centering ring 15, the braking ring 17 has been pushed forward so that it is the enlarged section portion 20 which is located in line with the balls 18 , not pushed back by the ring 17 towards the counterweight 13. Thus, no force being exerted on the balls, no resistance is applied to the rod of the counterweight 13 after ignition. The balls 18 not being in contact with the braking ring 17, they can roll freely on the counterweight rod.

Après le tir, quand on éloigne l'appareil de la surface d'appui, sous l'action du ressort 8, le canon 6,6' est entraîné vers l'avant et la cartouche 5 est dégagée. Toujours sous l'action du ressort 8, la bague de guidage 10 est entraînée vers l'avant en entrainant avec elle le guide-tampon 11. Dans ce mouvement, les billes 18 roulent sur la masselotte 13 sans effort et entraînent la bague de freinage 17, par la zone raccordant ses deux portions de sections différentes, jusqu'à ce que l'extrémité avant 26 de la bague 17 vienne en butée contre le fond avant 27 de la rainure 12. Alors, relativement au guide-tampon 11, la bague de freinage 17 coulisse vers l'arrière et sa portion avant, de section "rétrécie", entre en contact avec les billes 18, les pousse radialement vers la masselotte 13 pour exercer une pression sur la masselotte et solidariser ainsi le guide-tampon 11 et cette masselotte 13.After firing, when the device is moved away from the bearing surface, under the action of the spring 8, the barrel 6,6 'is driven forward and the cartridge 5 is released. Still under the action of the spring 8, the guide ring 10 is driven forward by driving with it the buffer guide 11. In this movement, the balls 18 roll on the counterweight 13 without effort and drive the braking ring 17, by the zone connecting its two portions of different sections, until the front end 26 of the ring 17 abuts against the front bottom 27 of the groove 12. Then, relative to the buffer guide 11, the braking ring 17 slides backwards and its front portion, of "narrowed" section, comes into contact with the balls 18, pushes them radially towards the counterweight 13 to exert pressure on the counterweight and thus secure the buffer guide 11 and this flyweight 13.

Après introduction d'un nouveau tampon 1 dans le guide-tampon 11, quand on met l'appareil à nouveau en appui, contre l'action du ressort 8, le guide-tampon 11, par la bague et les billes de freinage, entraîne la masselotte 13 en position de mise à feu, avant que la bague de centrage 15 ne repousse vers l'avant la bague de freinage 17 et libère ainsi les billes 18 pour désolidariser la masselotte 13 du guide-tampon 11.After the introduction of a new buffer 1 into the buffer guide 11, when the apparatus is brought into contact again, against the action of the spring 8, the buffer guide 11, by the ring and the braking balls, drives the counterweight 13 in the firing position, before the centering ring 15 pushes the braking ring 17 forward and thus releases the balls 18 to separate the counterweight 13 from the buffer guide 11.

Dans la forme de réalisation de la figure 5 du guide-tampon, celui-ci porte, en arrière des évidements 24 de réception des billes de freinage 18, un jonc 40 qui assure deux fonctions. La première est d'éviter, par effet de butée, que la bague de freinage 17 ne se désolidarise du guide-tampon. La deuxième fonction est d'assurer une liaison positive entre la masselotte et la bague en servant encore de butée à la bague de freinage 17 qui est repoussée vers l'arrière sous l'action des billes de freinage 18 soumises à l'effort de la masselotte 13 qui, lors de la mise en appui de l'appareil, a tendance à les entrainer en rotation.In the embodiment of FIG. 5 of the buffer guide, the latter carries, behind the recesses 24 for receiving the braking balls 18, a rod 40 which performs two functions. The first is to prevent, by abutment effect, that the braking ring 17 does not separate from the buffer guide. The second function is to ensure a positive connection between the counterweight and the ring while still serving as a stop for the braking ring 17 which is pushed backwards under the action of the braking balls 18 subjected to the force of the counterweight 13 which, when the device is supported, tends to cause them to rotate.

Toujours en référence à la forme de réalisation de la figure 5, une portion 131 de la tige de la masselotte 13 a une section de diamètre plus petit que celui de l'alésage 111 du guide-tampon 11. Grâce à cela, les billes de freinage 18 peuvent venir plus facilement en saillie dans l'alésage 111 sans avoir à vaincre la résistance de la tige de masselotte. En outre, au moment de la mise en appui, la réaction des billes 18 au contact de la tige de masselotte 131 est plus efficace.Still with reference to the embodiment of FIG. 5, a portion 131 of the rod of the counterweight 13 has a cross section of smaller diameter than that of the bore 111 of the buffer guide 11. Thanks to this, the balls of braking 18 can more easily protrude into the bore 111 without having to overcome the resistance of the counterweight rod. In addition, at the time of implementation support, the reaction of the balls 18 in contact with the counterweight rod 131 is more effective.

On a décrit plus haut, en référence à la figure 4, une bague de guidage 10 vissée sur le guide-tampon 11. Naturellement, le guide et sa bague de guidage pourraient aussi réalisés d'une seule pièce.There has been described above, with reference to FIG. 4, a guide ring 10 screwed onto the buffer guide 11. Naturally, the guide and its guide ring could also be made in one piece.

Dans la forme de réalisation des figures 6 et 7, sur lesquelles les éléments analogues restent associés aux mêmes références, la masselotte 13 a une portion de tige 131 à section rétrécie, la bague de freinage 17 est montée rotative sur le guide-tampon 11 et en position de rappel sous l'action d'un ressort de torsion 117 fixé à la bague 17 de freinage et à la bague de guidage 10, la bagué de freinage 17 possède deux évidements intérieurs 217, pour recevoir en partie les billes de freinage 18 leur permettant de s'effacer et de s'écarter de la tige de masselotte, et la bague de freinage 17 possède une surface de came extérieure 317 destinée à coopérer avec un doigt, fixe en rotation, du canon 6, pour la faire tourner contre l'action du ressort de torsion 117. Cette surface de came est en l'espèce une rampe périphérique inclinée, depuis le bord transversal arrière 417 de la bague 17, aussi bien sur l'axe 30 de l'appareil que sur un plan perpendiculaire à cet axe 30, celui de la figure 7 par exemple, le doigt du canon 6 faisant saillie axialement vers l'avant.In the embodiment of FIGS. 6 and 7, in which similar elements remain associated with the same references, the counterweight 13 has a portion of rod 131 with a narrowed section, the braking ring 17 is rotatably mounted on the buffer guide 11 and in the return position under the action of a torsion spring 117 fixed to the braking ring 17 and to the guide ring 10, the braking ring 17 has two internal recesses 217, for partially receiving the braking balls 18 allowing them to disappear and move away from the counterweight rod, and the braking ring 17 has an outer cam surface 317 intended to cooperate with a finger, fixed in rotation, of the barrel 6, to rotate it against the action of the torsion spring 117. This cam surface is in this case an inclined peripheral ramp, from the rear transverse edge 417 of the ring 17, both on the axis 30 of the device and on a perpendicular plane In this axis 30, that of Figure 7 for example, the finger of the barrel 6 projecting axially forward.

Après le tir, quand on éloigne l'appareil des figures 6, 7 de la surface d'appui, le ressort 8 entraîne la bague de guidage 10 et le guide-tampon 11 vers l'avant jusqu'à ce que le bord avant 106 de la bague 10 vienne en butée contre le fond avant 27 de la rainure 12, sans que ni la bague de freinage 17 ni la masselotte 13 n'aient été déplacées par rapport au guide-tampon 11.After firing, when the apparatus of Figures 6, 7 is moved away from the bearing surface, the spring 8 drives the guide ring 10 and the buffer guide 11 forward until the front edge 106 of the ring 10 comes into abutment against the front bottom 27 of the groove 12, without neither the braking ring 17 nor the counterweight 13 having been moved relative to the buffer guide 11.

Quand les billes de freinage 18 parviennent dans la zône de la portion de tige rétrécie 131 de la masselotte, elles se déplacent vers l'axe 30 et libèrent la bague de freinage 17 qui, sous l'action du ressort de torsion 117, retourne en position de repos.When the braking balls 18 reach the area of the narrowed rod portion 131 of the counterweight, they move towards the axis 30 and release the braking ring 17 which, under the action of the torsion spring 117, returns to rest position.

Après introduction d'un nouveau tampon dans le guide-tampon, quand on met l'appareil à nouveau en appui, les billes 18 coopèrent avec l'épaulement annulaire 132 ménagé sur la masselotte par sa portion rétrécie 131, pour rappeler la masselotte 13 vers l'arrière, à la manière d'un cliquet de rappel.After introduction of a new tampon in the tampon guide, when the apparatus is brought to rest again, the balls 18 cooperate with the shoulder annular 132 formed on the counterweight by its narrowed portion 131, to return the counterweight 13 backwards, in the manner of a return pawl.

A la fin du recul, la masselotte est libérée par rotation de la bague de freinage 17 par le doigt du canon 6 et écartement des billes 18 et réception dans les évidements 217 de la bague 17.At the end of the recoil, the counterweight is released by rotation of the braking ring 17 by the finger of the barrel 6 and spacing of the balls 18 and reception in the recesses 217 of the ring 17.

Claims (14)

Appareil de scellement de tampons de fixation (1), à masselotte (13) destinée à être propulsée vers l'avant dans un canon (6, 6') et à coulisser dans une partie avant (11) de l'appareil faisant fonction de guide-tampon, pour entrainer un tampon (1) et le sceller, puis à être rappelée vers l'arrière en position de tir, avec des moyens de freinage qui sont agencés pour ne freiner la masselotte (13) que lors de son coulissement dans une direction et comprenant au moins une bille de freinage montée dans un évidement (24) du guide-tampon (11) et agencée pour, par coopération avec la masselotte (13), être poussée radialement vers celle-ci dans son coulissement dans ladite direction, caractérisé par le fait que les moyens de freinage (17) sont agencés pour pousser la bille (18) radialement vers la masselotte (13) lors de la mise en appui de l'appareil et du coulissement vers l'arrière du guide-tampon (11).Apparatus for sealing fixing buffers (1), with counterweight (13) intended to be propelled forward in a barrel (6, 6 ') and to slide in a front part (11) of the apparatus acting as pad guide, to drive a pad (1) and seal it, then to be returned to the rear in the firing position, with braking means which are arranged to brake the counterweight (13) only when it slides in a direction and comprising at least one braking ball mounted in a recess (24) of the buffer guide (11) and arranged to, by cooperation with the counterweight (13), be pushed radially towards the latter in its sliding in said direction , characterized in that the braking means (17) are arranged to push the ball (18) radially towards the counterweight (13) when the device is placed in abutment and sliding of the buffer guide towards the rear (11). Appareil selon la revendication 1, dans lequel les moyens de freinage sont agencés pour solidariser en coulissement le guide-tampon (11) et la masselotte (13) sous l'action d'un ressort (8) d'ouverture de l'appareil.Apparatus according to claim 1, in which the braking means are arranged to secure the sliding guide guide (11) and the counterweight (13) under the action of a spring (8) opening the device. Appareil selon l'une des revendications 1 et 2, dans lequel les moyens de freinage (8, 12, 17, 18) sont agencés pour solidariser en coulissement le guide-tampon (11) et la masselotte (13) avant l'ouverture complète de l'appareil (3).Apparatus according to one of claims 1 and 2, in which the braking means (8, 12, 17, 18) are arranged for slidingly securing the buffer guide (11) and the counterweight (13) before complete opening of the device (3). Appareil selon l'une des revendications 1 à 3, dans lequel les moyens de freinage (8, 12, 17, 18) sont agencés pour désolidariser la masselotte (13) du guide-tampon (11) en fin de mise en appui de l'appareil.Apparatus according to one of claims 1 to 3, in which the braking means (8, 12, 17, 18) are arranged to separate the counterweight (13) from the buffer guide (11) at the end of pressing of the 'apparatus. Appareil selon l'une des revendications 2 à 4, dans lequel les moyens de freinage comprennent le ressort d'ouverture (8), en appui contre un épaulement (9) du canon (6) et contre une bague de guidage (10) solidaire en coulissement du guide-tampon (11) et montée pour coulisser dans une rainure (12) du canon (6').Apparatus according to one of claims 2 to 4, wherein the braking means comprise the opening spring (8), in abutment against a shoulder (9) of the barrel (6) and against a guide ring (10) integral sliding the buffer guide (11) and mounted to slide in a groove (12) of the barrel (6 '). Appareil selon la revendication 5, dans lequel les moyens de freinage comprennent une bague de freinage (17), agencée pour venir en butée contre le fond avant (27) de la rainure (12) du canon (6') et solidariser le guide-tampon (11) et la masselotte (13) lors du coulissement final vers l'avant du guide-tampon (11).Apparatus according to claim 5, wherein the braking means comprise a braking ring (17), arranged to abut against the front bottom (27) of the groove (12) of the barrel (6 ') and secure the guide- buffer (11) and the counterweight (13) during the final sliding of the buffer guide (11) towards the front. Appareil selon l'une des revendications 5 et 6, dans lequel la bague de guidage (10) est vissée sur le guide-tampon (11).Apparatus according to one of claims 5 and 6, wherein the guide ring (10) is screwed on the buffer guide (11). Appareil selon l'une des revendications 5 à 7, dans lequel la bague de freinage (17) comporte une portion arrière (20) de section intérieure élargie empêchant toute coopération avec la bille de freinage (18).Apparatus according to one of claims 5 to 7, wherein the brake ring (17) has a rear portion (20) of enlarged inner section preventing any cooperation with the brake ball (18). Appareil selon l'une des revendications 5 à 8, dans lequel le guide-tampon (11), la bague de freinage (17) et la bille de freinage (18) sont agencés pour que lors de l'ouverture de l'appareil sous l'action du ressort d'ouverture (8), la bague de freinage (17) soit entrainée vers l'avant avec le guide-tampon (11) par la bille de freinage (18).Apparatus according to one of claims 5 to 8, in which the buffer guide (11), the braking ring (17) and the braking ball (18) are arranged so that when the apparatus is opened under the action of the opening spring (8), the braking ring (17) is driven forward with the buffer guide (11) by the braking ball (18). Appareil selon l'une des revendications 1 à 9, dans lequel le guide-tampon porte un jonc (40) de solidarisation des moyens de freinage (17) et du guide-tampon (11) et de liaison entre les moyens de freinage (17) et la masselotte (13).Apparatus according to one of claims 1 to 9, in which the buffer guide carries a rod (40) for securing the braking means (17) and the buffer guide (11) and for connecting between the braking means (17 ) and the flyweight (13). Appareil selon l'une des revendications 1 à 10, dans lequel la masselotte (13) comporte une portion de tige (131) de section rétrécie.Apparatus according to one of claims 1 to 10, in which the counterweight (13) comprises a portion of rod (131) of narrowed section. Appareil selon l'une des revendications 5 à 11, dans lequel la bague de guidage (10) et le guide-tampon (11) sont réalisées d'une seule pièce.Apparatus according to one of claims 5 to 11, wherein the guide ring (10) and the buffer guide (11) are made in one piece. Appareil selon l'une des revendications 1 à 5, dans lequel les moyens de freinage comprennent une bague (17) montée rotative sur le guide-tampon (11), avec un évidement (217) de réception de la bille (18), et la masselotte (13) comporte une portion de tige (131) de section rétrécie.Apparatus according to one of claims 1 to 5, in which the braking means comprise a ring (17) rotatably mounted on the buffer guide (11), with a recess (217) for receiving the ball (18), and the counterweight (13) comprises a portion of rod (131) of narrowed section. L'appareil selon la revendication 13, dans lequel la bague de freinage (17) possède une surface de came extérieure (317) agencée pour coopérer avec un doigt, fixe en rotation, du canon (6) et être entrainée en rotation contre l'action d'un ressort de torsion (117).The apparatus according to claim 13, wherein the brake ring (17) has an outer cam surface (317) arranged to cooperate with a finger, fixed in rotation, of the barrel (6) and to be driven in rotation against the action of a torsion spring (117).
EP96402380A 1995-12-13 1996-11-08 Apparatus for attaching fasteners Expired - Lifetime EP0779132B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9514763A FR2742375B1 (en) 1995-12-13 1995-12-13 FIXING PAD SEALING APPARATUS
FR9514763 1995-12-13

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EP0779132A1 true EP0779132A1 (en) 1997-06-18
EP0779132B1 EP0779132B1 (en) 2002-06-05

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US (1) US5881940A (en)
EP (1) EP0779132B1 (en)
JP (1) JPH09183078A (en)
KR (1) KR100195827B1 (en)
AT (1) ATE218415T1 (en)
AU (1) AU676818B1 (en)
DE (1) DE69621572T2 (en)
FR (1) FR2742375B1 (en)
NZ (1) NZ299885A (en)

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DE19962696C1 (en) * 1999-12-23 2001-06-07 Hilti Ag Power tool with an internal combustion power unit to drive mountings home has a brake system at the piston rod with an adjustable braking force to set the power transferred from the combustion chamber to the piston
DE10105885C1 (en) * 2001-02-09 2002-06-13 Hilti Ag Piston holder for driving piston of rivet gun has friction element with rising end surface and fixed press member in pressure contact with setting surface
DE10105879C2 (en) * 2001-02-09 2002-12-12 Hilti Ag piston holder
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DE10254964B4 (en) * 2002-11-26 2014-02-13 Hilti Aktiengesellschaft setting tool
FR2848489B1 (en) * 2002-12-11 2006-02-03 Prospection & Inventions INDIRECT SHIELDING APPARATUS
US9463557B2 (en) 2014-01-31 2016-10-11 Ingersoll-Rand Company Power socket for an impact tool
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Also Published As

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US5881940A (en) 1999-03-16
KR100195827B1 (en) 1999-06-15
FR2742375A1 (en) 1997-06-20
EP0779132B1 (en) 2002-06-05
NZ299885A (en) 1998-04-27
ATE218415T1 (en) 2002-06-15
AU676818B1 (en) 1997-03-20
KR970033611A (en) 1997-07-22
FR2742375B1 (en) 1998-02-13
JPH09183078A (en) 1997-07-15
DE69621572D1 (en) 2002-07-11
DE69621572T2 (en) 2003-01-09

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