EP0018272B1 - Power controlled stud-driving tool - Google Patents

Power controlled stud-driving tool Download PDF

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Publication number
EP0018272B1
EP0018272B1 EP80400478A EP80400478A EP0018272B1 EP 0018272 B1 EP0018272 B1 EP 0018272B1 EP 80400478 A EP80400478 A EP 80400478A EP 80400478 A EP80400478 A EP 80400478A EP 0018272 B1 EP0018272 B1 EP 0018272B1
Authority
EP
European Patent Office
Prior art keywords
barrel
ring
counterweight
piston
tool
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.)
Expired
Application number
EP80400478A
Other languages
German (de)
French (fr)
Other versions
EP0018272A1 (en
Inventor
Marc Combette
Jean Ollivier
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.)
Olin Corp
Original Assignee
Olin Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Olin Corp filed Critical Olin Corp
Priority to AT80400478T priority Critical patent/ATE4031T1/en
Publication of EP0018272A1 publication Critical patent/EP0018272A1/en
Application granted granted Critical
Publication of EP0018272B1 publication Critical patent/EP0018272B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion pressure
    • 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
    • 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

Definitions

  • the invention relates to an apparatus for sealing fasteners, comprising a barrel holder, a cylinder head secured to the barrel holder, a barrel mounted to slide in the breech, a counterweight mounted to slide in the barrel, and a tip guide, the rear end of the tip guide being in contact with the front end of the barrel.
  • the present invention aims to improve such weights sealing devices by providing a simple power variation device, easy to perform and allowing a range of large power variations with large degrees of freedom for the structure of the device.
  • the present invention relates to a sealing device of the type mentioned above, characterized in that it comprises a power adjustment ring mounted screwed on the tip guide and on the barrel holder, the ring and the front part of the barrel being arranged to cooperate together so that the rotation in one direction of the ring causes the barrel to slide towards the front of the device, while the rotation of the ring in the other direction causes a sliding from the barrel to the rear under the action of the tip guide, the sliding of the barrel regulating the volume of the gas expansion chamber behind the counterweight.
  • the barrel is fixed in rotation and has a groove in which a finger can protrude from a return pawl of the counterweight.
  • the power adjustment of the device of the invention is advantageously combined with a reminder of the counterweight in the firing position.
  • the apparatus of the invention referenced as 2 in the drawing, comprises a counterweight 4 which can be driven in displacement under the action of the combustion gases produced by a cartridge 6 in order to drive a fixing element, not shown, in a material intended to receive it.
  • the device 2 comprises a housing 8 in which is disposed a gun holder 10 screwed onto a cylinder head 12 in the form of a ring. Inside the barrel holder 10 is disposed a barrel 14 in the bore 16 of which the counterweight 4 is slidably mounted. The barrel 14 is slidably mounted in a bore 18 formed in the cylinder head 12.
  • the barrel 14 has a longitudinal groove 20 in which a finger 22 can protrude from a counterweight return pawl 24 pivotally mounted.
  • the end of the groove 20 disposed near the tip guide of the device which will be discussed below, is chamfered so as to have a cam surface, or ramp, 26 arranged to cooperate with the finger 22 and thus remove it from the groove when the device is supported.
  • the barrel 14 has at its end close to the tip guide a flange 28 extending radially outward and cooperating with a flange 30 extending radially inward formed on a power adjustment ring 32.
  • the ring 32 is screwed inside the end of the barrel holder 10, close to the tip guide, and comprises an enlarged portion 34 forming a shoulder 36 cooperating with a surface 38 formed at the end, close to the tip guide, of the barrel holder 10, when the ring 32 is fully screwed into the barrel holder 10.
  • a tip guide 40 is screwed into the ring 32 and comprises a ring 42 screwed firmly against the end 44 of the ring 32 facing towards outside the appliance.
  • a lock 50 is pivotally mounted under the action of a spring on the end, close to the tip guide, of the housing 8 and comprises a finger 52 extending inside a locking notch 54 formed at least at the end, close to the tip guide, of the gun holder.
  • the counterweight return pawl 24 is pivotally mounted against the action of a spring at the end, directed towards the tip guide, of a rod 56 which extends through a bore 58 formed in the barrel holder 10, a bore 60 formed in the cylinder head 12, and a bore 62 formed in the housing 8, the rod 56 having a threaded end 64 extending through a bore 66 formed in a operating cover 68 covering the rear end of the housing 8.
  • a bolt 70 is screwed onto the threaded end 64 of the rod 56 to hold this rod 56 in place.
  • the device 2 can be disassembled, for example to be cleaned, by actuating the latch 50 and removing the bolt 70.
  • a chamber support plate 72 is mounted in the housing 8 and has a boss 74 extending forward, in which a combustion chamber 76 is formed.
  • the chamber plate 72 is provided with a bore 88 opening out at the rear end so that the boss of the chamber of the counterweight 4.
  • the bore 88 is dimensioned so that the bossing of the combustion chamber 74 can be introduced into bore 88 while the device is resting when the device is ready to fire, as shown in FIG. 2.
  • the apparatus 2 is shown in the ready-to-fire position, position in which the power level of the apparatus is at its maximum and in which the rear face 5 of the counterweight 4 is in its position closest to the front end surface 75 of the boss of the combustion chamber 74.
  • the gas expansion chamber 90 occupies a minimum volume in which the combustion gases produced by the cartridge can relax before that the counterweight is entrained in the bore 16 of the barrel.
  • the dimensions of the expansion chamber 90 are determined by the cooperation of the rear face 5 of the counterweight 4 with the front face 15 of an inwardly extending collar provided at the rear end of the barrel 14.
  • the counterweight 4 After firing the device, the counterweight 4 is driven in the bore 16 of the barrel, the rod 92 of the counterweight 4 passing through the bore 41 of the tip guide 40. It will be readily understood that the fixing element , not shown, intended to be driven by the counterweight, is disposed in the bore 41 of the tip guide prior to firing the device.
  • the device After firing, the device is released from the bearing face of the material intended to receive the fixing element and the spring 78 recalls the interior sub-assembly in the position shown in FIG. 1, the only difference being in the fact that the counterweight 4 is in a driven position inside the bore 16 of the barrel with its head 94 disposed behind the finger 22 of the pawl 24, so that the latter, having pivoted to protrude at the interior of the bore 16 of the barrel is in a position where it can cooperate with the front surface 95 of the counterweight head 94.
  • the flyweight 4 is returned to the firing position by grasping the operating cover 68 with one hand, the other hand grasping the handle 108 of the device and pulling the operating cover 68 backwards.
  • the rod 56 is thus pulled backwards with the pawl 24.
  • the cooperation of the finger 22 of the pawl with the surface 95 of the counterweight head causes the counterweight 4 from its position after firing to its position before firing.
  • the rear face 5 of the counterweight 4 comes into contact with the face 15 of the inner collar of the barrel, the rearward movement of the operating cover 68 takes place against the action of the spring 78, the counterweight 4 then having been returned to the firing position.
  • the cover 68 of the rod 56 and the pawl 24 are then pushed forward and returned to their respective position shown in Figure 1.
  • the barrel holder 10 is locked in the front position by a ball 100 housed in a hole 101 formed in the cylinder head 12, and having a diameter greater than the thickness of the wall of the cylinder head 12.
  • the power level of the apparatus 2 can thus be adjusted from a high kinetic energy level, in which a maximum counterweight kinetic energy is developed by the cartridge, up to an average energy level in which the kinetic energy of the intermediate level flyweight is developed, while only slightly moving the adjusting ring 32 over a distance of a few centimeters, without consequently varying the overall length of the apparatus.
  • vents 96 (FIG. 3) which extend into the wall of the breech part 12 in which the barrel is slidably mounted and which open into a cavity 98 which is preferably isolated from the atmosphere and which is arranged between the barrel 14 and the barrel holder 10.
  • the vents 96 the power of the device can be adjusted to a low level without having to excessively unscrew the adjustment ring, or to excessively lengthen the whole device.
  • the device 2 can easily be dismantled by unscrewing and removing the bolt 70.
  • the lock 50 is then actuated to pivot in a counter-clockwise direction, so as to release the finger 52 from the locking notch 54.
  • the entire sub-assembly, comprising the barrel holder 10, the cylinder head 12, the barrel 14, the adjustment ring 32 and the tip guide 40, can then slide out of the housing 8.
  • the device is reassembled by reintroducing the sub-assembly into the housing 8, the latch 50 being held in the retracted non-locking position.
  • the bolt 50 is then released and the bolt 70 is screwed back onto the projecting end 64 of the rod 56.

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  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Soil Working Implements (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Harvester Elements (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Gripping On Spindles (AREA)
  • Generation Of Surge Voltage And Current (AREA)
  • Cosmetics (AREA)
  • Knitting Machines (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

A power adjustment for a piston-type powder actuated fastener driving tool wherein a tube is slidably disposed in the barrel of the tool, the tube containing the driving piston of the tool. The tube has a radially inwardly extending flange at its breech end which engages a radially outwardly extending surface on the piston. Means for moving the tube axially of the barrel are provided so that the distance between the flange and firing chamber can be varied whereby the gas expansion chamber between the firing chamber and the rear face of the piston can be varied thereby varying the power with which the piston is driven.

Description

L'invention concerne un appareil de scellement d'éléments de fixation, comprenant un porte-canon, une culasse solidaire du porte-canon, un canon monté coulissant dans la culasse, une masselotte montée coulissante dans le canon, et un guide-pointe, l'extrémité arrière du guide-pointe étant en contact avec l'extrémité avant du canon.The invention relates to an apparatus for sealing fasteners, comprising a barrel holder, a cylinder head secured to the barrel holder, a barrel mounted to slide in the breech, a counterweight mounted to slide in the barrel, and a tip guide, the rear end of the tip guide being in contact with the front end of the barrel.

On connaît déjà de nombreux appareils de ce type (CH-A-355111, GB-A-1116777, CH-A-439170) Néanmoins, dans ceux-ci, la variation du volume initial de la chambre de combustion qui détermine la puissance avec laquelle la masselotte est entraînée par les gaz de combustion, masselotte qui à son tour entraîne en déplacement un élément de fixation dans un matériau destiné à le recevoir, est obtenue à l'aide de moyens relativement lourds.Many devices of this type are already known (CH-A-355111, GB-A-1116777, CH-A-439170) Nevertheless, in these, the variation in the initial volume of the combustion chamber which determines the power with which the counterweight is driven by the combustion gases, which counterweight in turn drives a fastening element in a material intended to receive it, is obtained using relatively heavy means.

La présente invention vise à perfectionner de tels appareils de scellement à masselotte en procurant un dispositif de variation de puissance simple, facile à réaliser et permettant une plage de variations de puissance importante avec de grands degrés de liberté pour la structure de l'appareil.The present invention aims to improve such weights sealing devices by providing a simple power variation device, easy to perform and allowing a range of large power variations with large degrees of freedom for the structure of the device.

A cet effet, la présente invention concerne un appareil de scellement du type mentionné ci- dessus, caractérisé par le fait qu'il comporte une bague de réglage de puissance montée vissée sur le guide-pointe et sur le porte-canon, la bague et la partie avant du canon étant agencées pour coopérer ensemble de façon que la rotation dans un sens de la bague entraîne un coulissement du canon vers l'avant de l'appareil, alors que la rotation de la bague dans l'autre sens entraîne un coulissement du canon vers l'arrière sous l'action du guide-pointe, le coulissement du canon réglant le volume de la chambre d'expansion des gaz en arrière de la masselotte.To this end, the present invention relates to a sealing device of the type mentioned above, characterized in that it comprises a power adjustment ring mounted screwed on the tip guide and on the barrel holder, the ring and the front part of the barrel being arranged to cooperate together so that the rotation in one direction of the ring causes the barrel to slide towards the front of the device, while the rotation of the ring in the other direction causes a sliding from the barrel to the rear under the action of the tip guide, the sliding of the barrel regulating the volume of the gas expansion chamber behind the counterweight.

Grâce à l'invention, il suffit d'entraîner en rotation la bague de réglage de puissance pour faire varier dans un sens ou dans l'autre le volume initial de la chambre de combustion et par conséquent la puissance de tir.Thanks to the invention, it suffices to rotate the power adjusting ring to vary in one direction or the other the initial volume of the combustion chamber and therefore the firing power.

Dans une forme de réalisation de l'invention, le canon est fixe en rotation et comporte une rainure dans laquelle peut faire saillie un doigt d'un cliquet de rappel de la masselotte. Dans ce cas, le réglage de puissance de l'appareil de l'invention se combine avantageusement avec un rappel de la masselotte en position de tir.In one embodiment of the invention, the barrel is fixed in rotation and has a groove in which a finger can protrude from a return pawl of the counterweight. In this case, the power adjustment of the device of the invention is advantageously combined with a reminder of the counterweight in the firing position.

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

  • - La figure 1 représente une coupe longitudinale de l'appareil de l'invention, le sous-ensemble de canon étant représenté dans sa position la plus avancée;
  • - La figure 2 représente une vue en coupe de l'appareil de la figure 1 dans sa position prête au tir, et
  • - La figure 3 représente l'appareil des figures précédentes avec le sous-ensemble de canon juste avant sa position verrouillée.
The invention will be better understood with the aid of the following description of a preferred embodiment of the invention with reference to the appended drawing, in which:
  • - Figure 1 shows a longitudinal section of the apparatus of the invention, the barrel sub-assembly being shown in its most advanced position;
  • FIG. 2 represents a sectional view of the apparatus of FIG. 1 in its position ready for shooting, and
  • - Figure 3 shows the apparatus of the preceding figures with the barrel sub-assembly just before its locked position.

L'appareil de l'invention, référencé en 2 sur le dessin, comporte une masselotte 4 pouvant être entraînée en déplacement sous l'action des gaz de combustion produits par une cartouche 6 afin d'entraîner un élément de fixation, non représenté, dans un matériau destiné à le recevoir.The apparatus of the invention, referenced as 2 in the drawing, comprises a counterweight 4 which can be driven in displacement under the action of the combustion gases produced by a cartridge 6 in order to drive a fixing element, not shown, in a material intended to receive it.

L'appareil 2 comporte un boîtier 8 dans lequel est disposé un porte-canon 10 vissé sur une culasse 12 en forme d'anneau. A l'intérieur du porte-canon 10 est disposé un canon 14 dans l'alésage 16 duquel la masselotte 4 est montée coulissante. Le canon 14 est monté coulissant dans un alésage 18 formé dans la culasse 12. Le canon 14 comporte une rainure longitudinale 20 dans laquelle peut faire saillie un doigt 22 d'un cliquet de rappel de masselotte 24 monté pivotant. L'extrémité de la rainure 20 disposée à proximaté du guide-pointe de l'appareil, dont il sera question ci-après, est chanfreinée de manière à présenter une surface de came, ou rampe, 26 agencée pour coopérer avec le doigt 22 et le faire sortir ainsi de la rainure lors de la mise en appui de l'appareil.The device 2 comprises a housing 8 in which is disposed a gun holder 10 screwed onto a cylinder head 12 in the form of a ring. Inside the barrel holder 10 is disposed a barrel 14 in the bore 16 of which the counterweight 4 is slidably mounted. The barrel 14 is slidably mounted in a bore 18 formed in the cylinder head 12. The barrel 14 has a longitudinal groove 20 in which a finger 22 can protrude from a counterweight return pawl 24 pivotally mounted. The end of the groove 20 disposed near the tip guide of the device, which will be discussed below, is chamfered so as to have a cam surface, or ramp, 26 arranged to cooperate with the finger 22 and thus remove it from the groove when the device is supported.

Le canon 14 comporte à son extrémité voisine du guide-pointe une collerette 28 s'étendant radialement vers l'extérieur et coopérant avec une collerette 30 s'étendant radialement vers l'intérieur ménagée sur une bague de réglage de puissance 32. La bague 32 est vissée à l'intérieur de l'extrémité du porte-canon 10, proche du guide-pointe, et comporte une portion élargie 34 formant un épaulement 36 coopérant avec une surface 38 ménagée à l'extrémité, proche du guide-pointe, du porte-canon 10, lorsque la bague 32 est vissée complètement dans le porte-canon 10. Un guide-pointe 40 est vissé dans la bague 32 et comporte une bague 42 vissée fermement contre l'extrémité 44 de la bague 32 orientée vers l'extérieur de l'appareil. L'extrémité intérieure 46 du guide-pointe 40 est disposée en contact avec l'extrémité 48, dirigée vers le guide-pointe, du canon 14. Un verrou 50 est monté pivotant sous l'action d'un ressort sur l'extrémité, proche du guide-pointe, du boîtier 8 et comporte un doigt 52 s'étendant à l'intérieur d'une encoche de verrouillage 54 ménagée au moins à l'extrémité, proche du guide-pointe, du porte-canon.The barrel 14 has at its end close to the tip guide a flange 28 extending radially outward and cooperating with a flange 30 extending radially inward formed on a power adjustment ring 32. The ring 32 is screwed inside the end of the barrel holder 10, close to the tip guide, and comprises an enlarged portion 34 forming a shoulder 36 cooperating with a surface 38 formed at the end, close to the tip guide, of the barrel holder 10, when the ring 32 is fully screwed into the barrel holder 10. A tip guide 40 is screwed into the ring 32 and comprises a ring 42 screwed firmly against the end 44 of the ring 32 facing towards outside the appliance. The inner end 46 of the tip guide 40 is disposed in contact with the end 48, directed towards the tip guide, of the barrel 14. A lock 50 is pivotally mounted under the action of a spring on the end, close to the tip guide, of the housing 8 and comprises a finger 52 extending inside a locking notch 54 formed at least at the end, close to the tip guide, of the gun holder.

Le cliquet de rappel de masselotte 24 est monté pivotant contre l'action d'un ressort à l'extrémité, dirigée vers le guide-pointe, d'une tige 56 qui s'étend à travers un alésage 58 ménagé dans le porte-canon 10, un alésage 60 ménagé dans la culasse 12, et un alésage 62 ménagé dans le boîtier 8, la tige 56 comportant une extrémité filetée 64 s'étendant à travers un alésage 66 ménagé dans un couvercle de manoeuvre 68 recouvrant l'extrémité arrière du boîtier 8. Un boulon 70 est vissé sur l'extrémité filetée 64 de la tige 56 pour maintenir cette tige 56 en place.The counterweight return pawl 24 is pivotally mounted against the action of a spring at the end, directed towards the tip guide, of a rod 56 which extends through a bore 58 formed in the barrel holder 10, a bore 60 formed in the cylinder head 12, and a bore 62 formed in the housing 8, the rod 56 having a threaded end 64 extending through a bore 66 formed in a operating cover 68 covering the rear end of the housing 8. A bolt 70 is screwed onto the threaded end 64 of the rod 56 to hold this rod 56 in place.

Comme on le verra ci-après, l'appareil 2 peut être désassemblé, par exemple pour être nettoyé, en actionnant le verrou 50 et en enlevant le boulon 70. Une plaque porte-chambre 72 est montée dans le boîtier 8 et comporte un bossage 74 s'étendant vers l'avant, dans lequel est formée une chambre de combustion 76.As will be seen below, the device 2 can be disassembled, for example to be cleaned, by actuating the latch 50 and removing the bolt 70. A chamber support plate 72 is mounted in the housing 8 and has a boss 74 extending forward, in which a combustion chamber 76 is formed.

On notera que le porte-canon 10, la culasse 12, le canon 14, la bague de réglage 32 et le guide-pointe 40 forment un sous-ensemble pouvant coulisser axialement sur une distance limitée à l'intérieur du boîtier 8. Sur la figure 1, ce sous-ensemble est représenté dans sa position la plus avancée dans laquelle il est rappelé par un ressort 78 qui entoure une portion de la tige 56 qui est contenue dans un alésage 80 du boîtier 8. Le débattement extrême de cette position avancée est limité par le doigt 52 du verrou 50 coopérant avec une paroi arrière 82 de l'encoche 54. Il faut noter que lorsque ce sous-ensemble est dans sa position la plus avancée, une distance G sépare la paroi arrière 84 de la culasse 12 et la paroi avant 86 de la plaque porte-chambre 72. Il faut encore noter que la plaque porte-chambre 72 est pourvue d'un alésage 88 débouchant sur l'extrémité arrière de manière que le bossage de la chambre de la masselotte 4. L'alésage 88 est dimensionné de manière que le bossxage de la chambre de combustion 74 puisse être introduit dans l'alésage 88 pendant la mise en appui de l'appareil lorsque l'appareil est prêt au tir, comme représenté sur la figure 2.It will be noted that the barrel holder 10, the breech 12, the barrel 14, the adjustment ring 32 and the tip guide 40 form a sub-assembly which can slide axially over a limited distance inside the housing 8. On the Figure 1, this sub-assembly is shown in its most advanced position in which it is recalled by a spring 78 which surrounds a portion of the rod 56 which is contained in a bore 80 of the housing 8. The extreme movement of this advanced position is limited by the finger 52 of the latch 50 cooperating with a rear wall 82 of the notch 54. It should be noted that when this sub-assembly is in its most advanced position, a distance G separates the rear wall 84 from the cylinder head 12 and the front wall 86 of the chamber plate 72. It should also be noted that the chamber plate 72 is provided with a bore 88 opening out at the rear end so that the boss of the chamber of the counterweight 4. The bore 88 is dimensioned so that the bossing of the combustion chamber 74 can be introduced into bore 88 while the device is resting when the device is ready to fire, as shown in FIG. 2.

En référence à la figure 2, l'appareil 2 est montré en position de mise en appui prêteau tir, position dans laquelle le niveau de puissance de l'appareil est à son maximum et dans laquelle la face arrière 5 de la masselotte 4 est dans sa position la plus proche de la surface d'extrémité avant 75 du bossage de la chambre de combustion 74. Ainsi, la chambre d'expansion des gaz 90 occupe un volume minimal dans lequel les gaz de combustion produits par la cartouche peuvent se détendre avant que la masselotte ne soit entraînée dans l'alésage 16 du canon. Les dimensions de la chambre d'expansion 90 sont déterminées par la coopération de la face arrière 5 de la masselotte 4 avec la face avant 15 d'une collerette s'étendant vers l'intérieur ménagée à l'extrémité arrière du canon 14.With reference to FIG. 2, the apparatus 2 is shown in the ready-to-fire position, position in which the power level of the apparatus is at its maximum and in which the rear face 5 of the counterweight 4 is in its position closest to the front end surface 75 of the boss of the combustion chamber 74. Thus, the gas expansion chamber 90 occupies a minimum volume in which the combustion gases produced by the cartridge can relax before that the counterweight is entrained in the bore 16 of the barrel. The dimensions of the expansion chamber 90 are determined by the cooperation of the rear face 5 of the counterweight 4 with the front face 15 of an inwardly extending collar provided at the rear end of the barrel 14.

On notera, sur la figure 2, que quand l'appareil est dans sa position de mise en appui, la surface de came 26 coopère avec le doigt 22 pour entraîner le cliquet 24 en pivotement dans le sens des aiguilles d'une montre, de manière que le doigt 22 ne fasse plus saillie à l'intérieur de l'alésage 16 du canon.It will be noted, in FIG. 2, that when the device is in its resting position, the cam surface 26 cooperates with the finger 22 to drive the pawl 24 in pivoting clockwise, by so that the finger 22 no longer protrudes inside the bore 16 of the barrel.

Après la mise à feu de l'appareil, la masselotte 4 est entraînée dans l'alésage 16 du canon, la tige 92 de la masselotte 4 traversant l'alésage 41 du guide-pointe 40. On comprendra aisément que l'élément de fixation, non représenté, destiné à être entraîné par la masselotte, est disposé dans l'alésage 41 du guide-pointe préalablement à la mise à feu de l'appareil.After firing the device, the counterweight 4 is driven in the bore 16 of the barrel, the rod 92 of the counterweight 4 passing through the bore 41 of the tip guide 40. It will be readily understood that the fixing element , not shown, intended to be driven by the counterweight, is disposed in the bore 41 of the tip guide prior to firing the device.

Après la mise à feu, l'appareil est dégagé de la face d'appui du matériau destiné à recevoir l'élément de fixation et le ressort 78 rappelle le sous-ensemble intérieur en position représentée sur la figure 1, la seule différence résidant dans le fait que la masselotte 4 se trouve dans une position entraînée à l'intérieur de l'alésage 16 du canon avec sa tête 94 disposée en arrière du doigt 22 du cliquet 24, de manière que celui-ci, ayant pivoté pour faire saillie à l'intérieur de l'alésage 16 du canon, se trouve dans une position où il peut coopérer avec la surface frontale 95 de la tête de masselotte 94.After firing, the device is released from the bearing face of the material intended to receive the fixing element and the spring 78 recalls the interior sub-assembly in the position shown in FIG. 1, the only difference being in the fact that the counterweight 4 is in a driven position inside the bore 16 of the barrel with its head 94 disposed behind the finger 22 of the pawl 24, so that the latter, having pivoted to protrude at the interior of the bore 16 of the barrel is in a position where it can cooperate with the front surface 95 of the counterweight head 94.

La masselotte 4 est ramenée en position de mise à feu en saisissant le couvercle de manoeuvre 68 d'une main, l'autre main saisissant la poignée 108 de l'appareil et en tirant le couvercle de manoeuvre 68 vers l'arrière. La tige 56 est ainsi tirée vers l'arrière avec le cliquet 24. La coopération du doigt 22 du cliquet avec la surface 95 de la tête de masselotte entraîne la masselotte 4 de sa position après tir à sa position avant tir. Lorsque la face arrière 5 de la masselotte 4 arrive au contact de la face 15 de la collerette intérieure du canon, le déplacement vers l'arrière du couvercle de manoeuvre 68 s'effectue contre l'action du ressort 78, la masselotte 4 ayant alors été ramenée en position de mise à feu. Le couvercle 68 de la tige 56 et le cliquet 24 sont alors repoussés vers l'avant et ramenés dans leur position respective représentée sur la figure 1. Pendant le mouvement arrière du couvercle 68, le porte-canon 10 est verrouillé dans la position avant par une bille 100 logée dans un trou 101 ménagé dans la culasse 12, et ayant un diamètre supérieur à l'épaisseur de la paroi de la culasse 12.The flyweight 4 is returned to the firing position by grasping the operating cover 68 with one hand, the other hand grasping the handle 108 of the device and pulling the operating cover 68 backwards. The rod 56 is thus pulled backwards with the pawl 24. The cooperation of the finger 22 of the pawl with the surface 95 of the counterweight head causes the counterweight 4 from its position after firing to its position before firing. When the rear face 5 of the counterweight 4 comes into contact with the face 15 of the inner collar of the barrel, the rearward movement of the operating cover 68 takes place against the action of the spring 78, the counterweight 4 then having been returned to the firing position. The cover 68 of the rod 56 and the pawl 24 are then pushed forward and returned to their respective position shown in Figure 1. During the rear movement of the cover 68, the barrel holder 10 is locked in the front position by a ball 100 housed in a hole 101 formed in the cylinder head 12, and having a diameter greater than the thickness of the wall of the cylinder head 12.

Lorsque le couvercle 68 est dans la position avancée de la figure 3, la bille 100 est disposée dans une rainure 102 ménagée sur la tige 56 permettant le déplacement du porte-canon 10.When the cover 68 is in the advanced position of FIG. 3, the ball 100 is arranged in a groove 102 formed on the rod 56 allowing the movement of the gun holder 10.

Lorsque l'on tire le couvercle 68 vers l'arrière (fig. 1), entraînant avec lui la tige 56, la bille 100 monte et se dégage de la rainure 102 pour venir dans le logement 103 ménagé dans le boîtier 8 verrouillant ainsi le porte-canon 10, la masselotte 4 pouvant alors être ramenée dans sa position de mise à feu sans compression du ressort 78.When the cover 68 is pulled backwards (fig. 1), carrying with it the rod 56, the ball 100 rises and emerges from the groove 102 to come into the housing 103 formed in the housing 8 thus locking the gun holder 10, the counterweight 4 then being able to be brought back into its firing position without compression of the spring 78.

Le niveau de puissance de l'appareil varie en fonction du volume de la chambre d'expansion 90 de la manière suivante. Lorsque l'on dévisse la bague de réglage 32 vers l'avant et hors du porte-canon 10, la collerette 30 entraîne la collerette 28 du canon et par conséquent le canon 14 lui-même vers l'avant pour l'éloigner de la culasse 12. De cette manière, la paroi d'extrémité arrière 21 de la rainure 20 et la surface 15 de la collerette intérieure du canon sont écartées de ta culasse 12. Ainsi, l'espace ménagé entre l'extrémité avant 75 du bossage 74 de la chambre d'expansion et la surface arrière 5 de la masselotte augmente. Comme le volume de la chambre d'expansion 90 augmente, les gaz de combustion disposent d'une plus grande place et d'un délai plus important pour se détendre avant que la masselotte 4 ne soit entraînée, ce qui réduira la vitesse de propulsion de la masselotte 4. Il faut noter que lorsque la bague 32 est à nouveau vissée dans le porte-canon 10, le canon 14 est entraîné longi- tidinalement vers l'arrière par le guide-pointe 40 poussant l'extrémité 48, en contact avec le guide-pointe, du canon 14 et augmentant ainsi le niveau de piussance de l'appareil.The power level of the apparatus varies according to the volume of the expansion chamber 90 as follows. When the adjustment ring 32 is unscrewed forwards and out of the barrel holder 10, the collar 30 drives the collar 28 of the barrel and consequently the barrel 14 itself forwards to move it away from the cylinder head 12. In this way, the rear end wall 21 of the groove 20 and the face 15 of the inner collar of the barrel are spaced from your breech 12. Thus, the space formed between the front end 75 of the boss 74 of the expansion chamber and the rear surface 5 of the counterweight increases. As the volume of the expansion chamber 90 increases, the combustion gases have more space and a longer time to relax before the counterweight 4 is driven, which will reduce the propulsion speed of the counterweight 4. It should be noted that when the ring 32 is again screwed into the barrel holder 10, the barrel 14 is driven longitudinally rearward by the tip guide 40 pushing the end 48, in contact with the tip guide, from the barrel 14 and thus increasing the level of piussance of the device.

On a trouvé que le niveau de puissance de l'appareil 2 pouvait être ainsi réglé depuis un niveau d'énergie cinétique élevé, dans lequel une énergie cinétique de masselotte maximale est développée par la cartouche, jusqu'à un niveau d'énergie moyen dans lequel l'énergie cinétique de masselotte de niveau intermédiaire est développée, tout en ne déplaçant que faiblement la bague de réglage 32 sur une distance de quelques centimètres, sans faire par conséquent varier la longueur hors-tout de l'appareil.It has been found that the power level of the apparatus 2 can thus be adjusted from a high kinetic energy level, in which a maximum counterweight kinetic energy is developed by the cartridge, up to an average energy level in which the kinetic energy of the intermediate level flyweight is developed, while only slightly moving the adjusting ring 32 over a distance of a few centimeters, without consequently varying the overall length of the apparatus.

Cependant, de manière à pouvoir obtenir une puissance de mise à feu faible, on a prévu un ou plusieurs évents 96 (fig. 3) qui s'étendant dans la paroi de la partie de culasse 12 dans laquelle le canon est monté coulissant et qui débouchent dans une cavité 98 qui est, de préférence, isolée de l'atmosphère et qui est disposée entre le canon 14 et le porte-canon 10. Lorsque la bague 32 est suffisamment dévissée du porte-canon 10, le canon 14 est tiré vers l'avant suffisamment pour découvrir les évents 96 et procurer ainsi un passage aux gaz de combustion qui peuvent s'échapper de la chambre de combustion 90, ce qui conduit à réduire la puissance avec laquelle la masselotte 4 est entraînée. Grâce aux évents 96, on peut régler la puissance de l'appareil à un niveau bas sans avoir à dévisser excessivement la bague de réglage, ni à rallonger outre-mesure l'ensemble de l'appareil.However, in order to be able to obtain a low firing power, there are provided one or more vents 96 (FIG. 3) which extend into the wall of the breech part 12 in which the barrel is slidably mounted and which open into a cavity 98 which is preferably isolated from the atmosphere and which is arranged between the barrel 14 and the barrel holder 10. When the ring 32 is sufficiently unscrewed from the barrel holder 10, the barrel 14 is pulled towards the front enough to uncover the vents 96 and thus provide a passage for the combustion gases which can escape from the combustion chamber 90, which leads to reducing the power with which the flyweight 4 is driven. Thanks to the vents 96, the power of the device can be adjusted to a low level without having to excessively unscrew the adjustment ring, or to excessively lengthen the whole device.

En positionnant et dimensionnant de façon appropriée ces évents, on obtient une plage de variations de puissance importante avec de grands degrés de liberté pour la structure de l'appareil, dans lequel des niveaux de puissance élevé, moyen et faible peuvent être obtenus.By appropriately positioning and sizing these vents, a wide range of power variations is obtained with large degrees of freedom for the structure of the apparatus, in which high, medium and low power levels can be obtained.

L'appareil 2 peut facilement être démonté en dévissant et en ôtant le boulon 70. Le verrou 50 est ensuite actionné pour pivoter en sens contraire des aiguilles d'une montre, de manière à dégager le doigt 52 de l'encoche de verrouillage 54. Tout le sous-ensemble, comprenant le porte-canon 10, la culasse 12, le canon 14, la bague de réglage 32 et le guide-pointe 40, peut alors coulisser hors du boîtier 8.The device 2 can easily be dismantled by unscrewing and removing the bolt 70. The lock 50 is then actuated to pivot in a counter-clockwise direction, so as to release the finger 52 from the locking notch 54. The entire sub-assembly, comprising the barrel holder 10, the cylinder head 12, the barrel 14, the adjustment ring 32 and the tip guide 40, can then slide out of the housing 8.

Le remontage de l'appareil est effectué en réintroduisant le sous-ensemble dans le boîtier 8, le verrou 50 étant maintenu en position rétractée de non-verrouillage. On relâche ensuite le verrou 50 et on revisse le boulon 70 sur l'extrémité en saillie 64 de la tige 56.The device is reassembled by reintroducing the sub-assembly into the housing 8, the latch 50 being held in the retracted non-locking position. The bolt 50 is then released and the bolt 70 is screwed back onto the projecting end 64 of the rod 56.

Claims (4)

1. Fastener driving tool, comprising a barrel holder (10), a breech (12) integral with the barrel holder (10), a barrel (14) slidingly mounted within the breech (12), a driving piston (4) slidingly mounted within the barrel (14), and a muzzle-bushing (40), the rearward end (46) of the muzzle-bushing (40) being in contact with the forward end (48) of the barrel, tool characterized in that it comprises a power adjustment ring (32) adapted for being screwed onto the muzzle-bushing (40) and the barrel holder (10), the ring (32) and the forward portion of the barrel (14) being adapted to cooperate so that the rotation, in one direction, of the ring (32) causes the barrel (14) to slide forwards, whereas the rotation, in the other direction, of the ring, causes the barrel (14) to slide backwards under the action of the muzzle-bushing (40), the sliding of the barrel (14) adjusting the volume of the gas expansion chamber behind the driving piston (4).
2. Tool according to claim 1, characterized in that the forward portion of the barrel (14) comprises a collar (28) engaging a collar (30) provided at the backward portion of the ring (32).
3. Tool according to one of claims 1 and 2, characterized in that the wall of the breech portion in which the barrel (14) is slidingly mounted comprises vent means (96).
4. Tool according to one of claims 1 to 3, characterized in that the barrel (14) is fixed in rotation and comprises a slot (20) through which a tang (22) of a pawl (24) for returning the driving piston (4) can extend.
EP80400478A 1979-04-10 1980-04-09 Power controlled stud-driving tool Expired EP0018272B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80400478T ATE4031T1 (en) 1979-04-10 1980-04-09 PERFORMANCE REGULATOR WITH PERFORMANCE REGULATION.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2912653A GB2045673B (en) 1979-04-10 1979-04-10 Powder actuated piston tool with power adjustment
GB7912653 1979-04-10

Publications (2)

Publication Number Publication Date
EP0018272A1 EP0018272A1 (en) 1980-10-29
EP0018272B1 true EP0018272B1 (en) 1983-07-06

Family

ID=10504477

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80400478A Expired EP0018272B1 (en) 1979-04-10 1980-04-09 Power controlled stud-driving tool

Country Status (13)

Country Link
US (1) US4374567A (en)
EP (1) EP0018272B1 (en)
JP (1) JPS569587A (en)
AT (1) ATE4031T1 (en)
AU (1) AU539556B2 (en)
BR (1) BR8002173A (en)
CA (1) CA1144302A (en)
DE (1) DE3064013D1 (en)
ES (1) ES8101442A1 (en)
GB (1) GB2045673B (en)
MX (1) MX151004A (en)
NZ (1) NZ193296A (en)
ZA (1) ZA801858B (en)

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US4493376A (en) * 1982-07-02 1985-01-15 Uniset Corporation Fastener driving tool
FR2620368A1 (en) * 1987-09-15 1989-03-17 Prospection & Inventions INDIRECT SHOT SEALING DEVICE WITH VARIABLE SHOT POWER
US5038665A (en) * 1990-02-02 1991-08-13 Honeywell Inc. Silent stud gun attachment device
DE4022673A1 (en) * 1990-07-17 1992-01-23 Hilti Ag POWDER POWERED SETTING DEVICE
AUPN585495A0 (en) * 1995-10-09 1995-11-02 Ramset Fasteners (Aust.) Pty. Limited Power actuated tools with power adjustment means
DE19617672C1 (en) * 1996-05-03 1997-10-09 Beto Tornado Gmbh Powder-operated stud setting tool
US5842623A (en) * 1997-06-16 1998-12-01 Olin Corporation Gas primed powder actuated tool
DE19749027B4 (en) * 1997-11-06 2007-07-19 Hilti Ag setting tool
DE19755407B4 (en) * 1997-12-12 2007-12-13 Hilti Ag setting tool
DE19805442A1 (en) * 1998-02-11 1999-08-12 Hilti Ag Nail setting tool for concrete, steel, etc.
DE19950349B4 (en) * 1999-10-19 2006-07-27 Hilti Ag Setting tool for fastening elements
DE10105142B4 (en) * 2001-02-06 2014-12-11 Hilti Aktiengesellschaft setting tool
DE20119463U1 (en) * 2001-11-29 2002-01-24 Hilti Ag, Schaan Portable, fuel-powered setting tool for fasteners
DE20119221U1 (en) * 2001-11-27 2002-01-31 Hilti Ag, Schaan Portable, fuel-powered setting tool for fasteners
DE10341819B4 (en) * 2003-09-09 2012-03-01 Hilti Aktiengesellschaft setting tool
DE10341821B4 (en) * 2003-09-09 2012-03-01 Hilti Aktiengesellschaft setting tool
DE10358578A1 (en) * 2003-12-15 2005-07-14 Hilti Ag Internal combustion setting device
DE10358576A1 (en) * 2003-12-15 2005-07-28 Hilti Ag Internal combustion setting device
EP2886259A1 (en) * 2013-12-18 2015-06-24 HILTI Aktiengesellschaft Driving device
EP2886258A1 (en) * 2013-12-18 2015-06-24 HILTI Aktiengesellschaft Driving device
US10926389B2 (en) * 2018-07-31 2021-02-23 Chung-Heng Lee Powder-actuated tool
CN109403971B (en) * 2018-11-06 2024-04-30 能诚集团有限公司 Fracturing device and ore mining method
JP6736717B1 (en) 2019-03-25 2020-08-05 大口マテリアル株式会社 Substrate for mounting semiconductor elements
JP6736719B1 (en) 2019-03-28 2020-08-05 大口マテリアル株式会社 Semiconductor element mounting parts, lead frame and semiconductor element mounting substrate
CN112483085B (en) * 2020-11-25 2023-06-13 晋能控股煤业集团有限公司 Mining technology for pressure relief on small coal pillar or coal pillar-free roof cutting based on composite perforation

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AT187869B (en) * 1953-01-24 1956-12-10 Walter Ing Schulz Bolt-firing tool
CH355111A (en) * 1957-11-29 1961-06-15 Termet Pierre Gun for driving an anchor into a material
US3204400A (en) * 1963-11-26 1965-09-07 United Shoe Machinery Corp Explosively-actuated stud-driving tool
GB1143567A (en) * 1966-09-08
US3746235A (en) * 1972-01-12 1973-07-17 Olin Corp Power control for powder-actuated tool
FR2211867A5 (en) * 1972-12-26 1974-07-19 Termet Pierre
DE2420089A1 (en) * 1974-04-25 1975-11-13 Hilti Ag POWDER POWERED SETTING DEVICE
DE2548014C2 (en) * 1975-10-27 1984-01-12 Hilti AG, 9494 Schaan Powder-powered setting tool with power regulation
US4113163A (en) * 1976-09-16 1978-09-12 Marc Combette Fastening tool using caseless munition

Also Published As

Publication number Publication date
GB2045673B (en) 1983-03-23
EP0018272A1 (en) 1980-10-29
DE3064013D1 (en) 1983-08-11
JPS626075B2 (en) 1987-02-07
ES490445A0 (en) 1980-12-16
GB2045673A (en) 1980-11-05
ZA801858B (en) 1981-04-29
AU539556B2 (en) 1984-10-04
MX151004A (en) 1984-09-06
US4374567A (en) 1983-02-22
ES8101442A1 (en) 1980-12-16
CA1144302A (en) 1983-04-12
ATE4031T1 (en) 1983-07-15
NZ193296A (en) 1983-12-16
BR8002173A (en) 1980-11-25
AU5726580A (en) 1980-10-16
JPS569587A (en) 1981-01-31

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