EP0018870B1 - Nailing tool including a percussion bolt - Google Patents

Nailing tool including a percussion bolt Download PDF

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Publication number
EP0018870B1
EP0018870B1 EP80400477A EP80400477A EP0018870B1 EP 0018870 B1 EP0018870 B1 EP 0018870B1 EP 80400477 A EP80400477 A EP 80400477A EP 80400477 A EP80400477 A EP 80400477A EP 0018870 B1 EP0018870 B1 EP 0018870B1
Authority
EP
European Patent Office
Prior art keywords
tool
bore
driving piston
rearward portion
rearward
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
EP80400477A
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German (de)
French (fr)
Other versions
EP0018870A1 (en
Inventor
Marc Combette
Jean Ollivier
Elmer Raleigh Hodil
Richard Beton
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
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Filing date
Publication date
Application filed by Olin Corp filed Critical Olin Corp
Priority to AT80400477T priority Critical patent/ATE1935T1/en
Publication of EP0018870A1 publication Critical patent/EP0018870A1/en
Application granted granted Critical
Publication of EP0018870B1 publication Critical patent/EP0018870B1/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

Definitions

  • the present invention relates to a sealing device according to the preamble of claim 1.
  • This device is intended to anchor fastening elements in hard materials, such as concrete and cement, wood, steel, or materials. analogues.
  • the apparatus of British patent GB-A-834,293 comprises a counterweight arranged to receive a fixing element, the assembly of the counterweight and this element prior to firing constituting a long operation. After firing the device, the separation of the two parts, if at all possible, is even worse. In addition, many weights must be available, as well as fixing elements of different diameters. Finally, we did not have with this device suitable elements for driving nails. Such drawbacks have therefore led to the abandonment of such a device.
  • the apparatus of the German patent DE-B-1 224 218 comprises a counterweight provided with a housing intended to receive the head of a fixing element and therefore to center it using a washer of sufficiently flexible plastic material to slide inside two bores of different diameters.
  • the fastening assembly made with such a device is not so good and in addition one must use a special rod to introduce a fastening element into the device and return the weight to its firing position.
  • the apparatus of British patents GB-A-734,344 and GB-A-901,023 comprises a fixing element with two centering means, the first consisting of the tip guide for guiding a washer mounted on the rod portion of the fixing element according to patent GB-A-734,344, the second centering means being constituted by the head portion of the fixing element, or a cap mounted on it, cooperating with the tip guide, whereas according to GB-A-901 023, the second centering means is constituted by a housing extending in the front end of the counterweight and receiving the head of the fixing element or a projecting portion extending back from the back end of it.
  • the front end of the counterweight before firing is arranged and centered in the tip guide and therefore the length of the stem of the counterweight which slides in the tip guide must be substantially greater than the length of the longest fastener to be anchored by the device. Consequently, these devices are limited in size as regards the length of the fastening elements since long fastening elements would lead to devices of considerable length with a heavy flyweight.
  • the present invention therefore aims to solve the problems which have arisen on the devices of the prior art.
  • the counterweight using its rear portion, can be guided in the bore in which this rear portion slides, while the fixing element introduced into the bore receiving the front portion of the counterweight is centered on its entire length without the need for a long flyweight. Consequently, the invention provides a relatively short device for anchoring long fastening elements with complete centering of these elements during their driving movement.
  • the wall formed at the front end of the rear driven and guided portion of the counterweight and by the wall formed at the rear end of the front drive portion of the counterweight.
  • These walls can be used in conjunction with a damping effect, a power adjustment, a safety effect, the ejection of the fastening elements, etc.
  • the length of one of the bores can be adjustable, while the length of the other remains constant or can also be adjustable.
  • the apparatus of the invention comprises a barrel tube 1 to the interior of which is disposed an elongated element 3 fixed to the tube 1 by means of a screw 2.
  • the elongated element 3 comprises two bores 4 and 5longitudinal and intersecting, the bore 4 being closed at the left end, in the figure, while the bore 5 is closed at the right end in the figure.
  • a sleeve 7 is screwed onto the tube 1 and comprises a bore 6 aligned with the bore 4 of the element 3, the bores 4 and 6 having the same diameter.
  • a bore 8 of smaller diameter than bore 6 is formed behind bore 6 to receive a cartridge support 9 provided with a central bore forming a combustion chamber 10 for a cartridge 11.
  • a counterweight 12 having a rear portion 13 and a front portion 14 is slidably mounted inside the elongated element 3.
  • the rear portion 13 is slidably mounted in the bores 6 and 4 and the front portion is slidably mounted in the bore 5.
  • the rear portion 13, when the appliance is ignited, is driven by the pressure of the combustion gases, while the front portion 14 drives a fixing element, not shown, having been previously introduced into the bore 5, between the front end 18 of the element 3 and the front end 17 of the front portion 14 of the counterweight 12.
  • a wall 15 is provided at the front end of the rear portion 13 of the counterweight 12.
  • the counterweight 12 comprises a rear portion 13, a front portion 14 offset transversely relative to the longitudinal direction of the barrel and shaped to slide respectively in the two bores 4 and 5.
  • the front end of the bore 4 in which slides the rear portion 13 of the counterweight 12 is arranged in front of the rear end of the bore 5 in which the front portion 14 of the counterweight 12 slides.
  • the bore 23 In its front region, as can be seen in fig. 2, the bore 23 has a semi-cylindrical wall extended by two parallel flat walls and spaced apart by a distance equal to the diameter of this cylindrical wall mentioned above. In the region of intersection of the bores 4 and 5, two portions 22 of the cylindrical wall remain, as can be seen in FIG. 3, and the head 20 and the washer 21 of the fixing element 19 bear against these two portions 22 as well as against the inner wall of the element 3.
  • the counterweight 12 has a second rear portion 24 slidably mounted in a bore 25 aligned with the bore 5.
  • the bore 25 may even extend through the handle, not shown, of the device and the portion 24 can be long enough so that part of it is never exposed to the action of the combustion gases.
  • the rear end of the portion 24 may have the shape of a truncated cone arranged to cooperate, when the counterweight is in its rear position, with a corresponding truncated cone formed in a recess in the device.
  • the frictional cooperation of the rear end of the portion 24 of the counterweight 12 and of the housing in the device prevents the counterweight from moving during the handling of the device, and also makes it possible to obtain a ballistic effect in the measurement where the flyweight only starts to move from a predetermined pressure prevailing in the combustion chamber after the ignition of the appliance.
  • the rear portion 24 can also be combined with an adjustable stop so as to vary the volume between the rear end of the rear portion 13 of the counterweight 12 and the cartridge 11.
  • the rear portion 24 may also include means arranged to pull the counterweight 12 after the use of the device. This can be done manually or automatically by opening the device. These means may have the form of an element projecting transversely to the device and provided at the rear end of the portion 24 which, when the device is opened, abuts against a fixed portion of the handle of the 'apparatus. When the barrel 1 slides forward, to the left in the drawings, the counterweight 12 is moved through the bores 4, 5 and 6 in its rear firing position.
  • This projecting element is arranged to bear against a fixed part located, before the propulsion of the counterweight 12, at a distance from this projecting element less than the distance separating the front end, from the bore 4 in which slides the rear portion 13 of the counterweight 12, and the front end of the rear portion 13 of the counterweight 12.
  • This projecting element can be fixed to the portion 24 so detachable. It is also possible to provide that said fixed part is fixed to the device in a detachable manner. Thus, this projecting element is used as a stop for the counterweight when the cartridge has supplied too much energy.
  • This projecting element or this portion fixed to the handle of the device can be arranged to be sheared.
  • spring means can be provided between this projecting element and the portion fixed to the handle of the device.
  • the second rear portion 24 can also serve as a safety device when the device is dropped, or as a retaining means, preventing the counterweight from moving if the cartridge is ignited.
  • a groove can be made on the portion 24 to receive a locking element or a trigger in order to retain the counterweight as long as the trigger has not actuated the trigger to release it from this groove.
  • the bore 25 is open at the rear part of the handle of the apparatus, a rod of suitable size can be introduced into this bore to push the counterweight 12, whether or not it is provided with this portion 24.
  • a fastener which has been wrongly inserted into the device may be ejected.
  • the front wall 15 of the counterweight 12 can advantageously constitute stop means for the counterweight when the energy of the cartridge is too high.
  • This wall can be arranged to receive by screwing a small piston 26 intended to be received in a housing 27, of the same section, formed in the wall 16 of the elongate element 3, thus making it possible to obtain pneumatic damping.
  • the housing 27 can also be filled with an elastic material. The means 26 and 27 can be reversed, the small piston then being fixed to the wall 16.
  • the small piston and its housing can be used as a hammer and anvil for a metal washer disposed in a slot 28 formed in the wall 16.
  • This front portion 16 of the element 3 can also be mounted to slide against the action of elastic means. an external depreciation system.
  • the relative position of the front wall 18 and of the remaining elements of the apparatus can vary so as to control the overpower of the front portion 14 of the counterweight 12.
  • the counterweight 12 can be formed from different assembled parts, damping means being able to be interposed between these parts.
  • the central part of the counterweight 12 can be weakened in an appropriate place, so as to retain inside the barrel of the apparatus, in the event of a fracture, a broken part of this counterweight.

Description

La présente invention concerne un appareil de scellement selon le préambule de la revendication 1. Cet appareil est destiné à ancrer des éléments de fixation dans des matériaux durs, tels que du béton et du ciment, du bois, de l'acier, ou des matériaux analogues.The present invention relates to a sealing device according to the preamble of claim 1. This device is intended to anchor fastening elements in hard materials, such as concrete and cement, wood, steel, or materials. analogues.

De tels appareils sont déjà connus, notamment par les brevets britanniques GB-A-734344, GB-A-834 293 et GB-A-901 023, ainsi que par le brevet allemand DE-B-1 224 218.Such devices are already known, in particular by the British patents GB-A-734344, GB-A-834 293 and GB-A-901 023, as well as by the German patent DE-B-1 224 218.

L'appareil du brevet britannique GB-A-834 293 comporte une masselotte agencée pour recevoir un élément de fixation, l'assemblage de la masselotte et de cet élément préalablement à la mise à feu constituant une opération longue. Après la mise à feu de l'appareil, la séparation des deux pièces, si tant est qu'elle soit possible, est même pire. En outre, on doit disposer de nombreuses masselottes, ainsi que d'éléments de fixation de diamètres différents. Enfin, on ne disposait pas avec cet appareil d'éléments appropriés pour entraîner des clous. De tels inconvénients ont par conséquent conduit à abandonner un tel appareil.The apparatus of British patent GB-A-834,293 comprises a counterweight arranged to receive a fixing element, the assembly of the counterweight and this element prior to firing constituting a long operation. After firing the device, the separation of the two parts, if at all possible, is even worse. In addition, many weights must be available, as well as fixing elements of different diameters. Finally, we did not have with this device suitable elements for driving nails. Such drawbacks have therefore led to the abandonment of such a device.

L'appareil du brevet allemand DE-B-1 224 218 comporte une masselotte pourvue d'un logement destiné à recevoir la tête d'un élément de fixation et par conséquent le centrer à l'aide d'une rondelle en matériau plastique suffisamment flexible pour coulisser à l'intérieur de deux alésages de diamètres différents. L'assemblage de fixation réalisé avec un tel appareil n'est pas si bon et en outre on doit utiliser une tige spéciale pour introduire un élément de fixation dans l'appareil et ramener la masselotte dans sa position de mise à feu. Bien qu'un tel appareil soit léger et court, ces inconvénients ont également conduit à l'abandonner pratiquement.The apparatus of the German patent DE-B-1 224 218 comprises a counterweight provided with a housing intended to receive the head of a fixing element and therefore to center it using a washer of sufficiently flexible plastic material to slide inside two bores of different diameters. The fastening assembly made with such a device is not so good and in addition one must use a special rod to introduce a fastening element into the device and return the weight to its firing position. Although such an apparatus is light and short, these drawbacks have also led to practically abandoning it.

L'appareil des brevets britanniques GB-A-734 344 et GB-A-901 023 comporte un élément de fixation avec deux moyens de centrage, le premier consistant dans le guide-pointe pour guider une rondelle montée sur la portion de tige de l'élément de fixation selon le brevet GB-A-734 344, le deuxième moyen de centrage étant constitué par la portion de tête de l'élément de fixation, ou un capuchon monté sur elle, coopérant avec le guide-pointe, alors que selon le brevet GB-A-901 023, le second moyen de centrage est constitué par un logement s'étendant dans l'extrémité avant de la masselotte et recevant la tête de l'élément de fixation ou une portion en saillie s'étendant en arrière de l'extrémité arrière de celle-ci. Selon ces deux brevets, l'extrémité avant de la masselotte avant la mise à feu est disposée et centrée dans le guide-pointe et par conséquent la longueur de la tige de la masselotte qui coulisse dans le guide-pointe doit être sensiblement plus grande que la longueur de l'élément de fixation le plus long destiné à être ancré par l'appareil. En conséquence, ces appareils sont limités en dimensions en ce qui concerne la longueur des éléments de fixation puisque des éléments de fixation longs conduiraient à des appareils d'une longueur importante avec une masselotte lourde.The apparatus of British patents GB-A-734,344 and GB-A-901,023 comprises a fixing element with two centering means, the first consisting of the tip guide for guiding a washer mounted on the rod portion of the fixing element according to patent GB-A-734,344, the second centering means being constituted by the head portion of the fixing element, or a cap mounted on it, cooperating with the tip guide, whereas according to GB-A-901 023, the second centering means is constituted by a housing extending in the front end of the counterweight and receiving the head of the fixing element or a projecting portion extending back from the back end of it. According to these two patents, the front end of the counterweight before firing is arranged and centered in the tip guide and therefore the length of the stem of the counterweight which slides in the tip guide must be substantially greater than the length of the longest fastener to be anchored by the device. Consequently, these devices are limited in size as regards the length of the fastening elements since long fastening elements would lead to devices of considerable length with a heavy flyweight.

La présente invention vise donc à résoudre les problèmes qui ont surgi sur les appareils de l'art antérieur.The present invention therefore aims to solve the problems which have arisen on the devices of the prior art.

Selon l'invention les problèmes sont résolus par les caractéristiques de la partie caractéri- sante de la revendication 1.According to the invention the problems are solved by the characteristics of the characterizing part of claim 1.

Ainsi, la masselotte, à l'aide de sa portion arrière, peut être guidée dans l'alésage dans lequel coulisse cette portion arrière, alors que l'élément de fixation introduit dans l'alésage recevant la portion avant de la masselotte est centré sur toute sa longueur sans qu'il soit besoin d'avoir une longue masselotte. Par conséquent, l'invention procure un appareil relativement court pour ancrer des éléments de fixation longs avec un centrage complet de ces éléments durant leur mouvement d'entraînement.Thus, the counterweight, using its rear portion, can be guided in the bore in which this rear portion slides, while the fixing element introduced into the bore receiving the front portion of the counterweight is centered on its entire length without the need for a long flyweight. Consequently, the invention provides a relatively short device for anchoring long fastening elements with complete centering of these elements during their driving movement.

D'autres avantages de l'invention sont fournis par la paroi formée à l'extrémité avant de la portion arrière entrainée et guidée de la masselotte et par la paroi formée à l'extrémité arrière de la portion avant d'entraînement de la masselotte. Ces parois peuvent être utilisées en liaison avec un effet d'amortissement, un réglage de puissance, un effet de sécurité, l'éjection des éléments de fixation, etc. La longueur de l'un des alésages peut être réglable, alors que la longueur de l'autre reste constante ou peut être également réglable.Other advantages of the invention are provided by the wall formed at the front end of the rear driven and guided portion of the counterweight and by the wall formed at the rear end of the front drive portion of the counterweight. These walls can be used in conjunction with a damping effect, a power adjustment, a safety effect, the ejection of the fastening elements, etc. The length of one of the bores can be adjustable, while the length of the other remains constant or can also be adjustable.

Dans le cas où la poignée et le guide-pointe de l'appareil de l'invention sont disposés de part et d'autre de l'axe du canon, il est possible d'ancrer des éléments de fixation à proximité de coins, puisque l'axe de l'alésage recevant les éléments de fixation est décentré par rapport au canon.L'invention sera mieux comprise à l'aide de la description suivante de plusieurs formes de réalisation préférées de l'appareil de l'invention en référence au dessin annexé sur lequel:

  • - La figure 1 est une vue en coupe longitudinale du canon d'une première forme de réalisation de l'appareil de l'invention;
  • - La figure 2 est une vue en coupe transversale selon la ligne II-II de la figure 1 ;
  • - La figure 3 est une vue en coupe transversale selon la ligne III-III de la figure 1;
  • - La figure 4 est une vue de face de la masselotte de l'appareil de la figure 1;
  • - La figure 5 est une vue longitudinale d'un élément de fixation destiné à être entraîné par l'appareil de l'invention, et
  • - La figure 6 est une vue en coupe longitudinale d'une deuxième forme de réalisation de l'appareil de l'invention.
In the case where the handle and the tip guide of the apparatus of the invention are arranged on either side of the axis of the barrel, it is possible to anchor fastening elements near corners, since the axis of the bore receiving the fastening elements is offset from the barrel. The invention will be better understood with the aid of the following description of several preferred embodiments of the apparatus of the invention with reference to the attached drawing in which:
  • - Figure 1 is a longitudinal sectional view of the barrel of a first embodiment of the apparatus of the invention;
  • - Figure 2 is a cross-sectional view along line II-II of Figure 1;
  • - Figure 3 is a cross-sectional view along line III-III of Figure 1;
  • - Figure 4 is a front view of the counterweight of the device of Figure 1;
  • FIG. 5 is a longitudinal view of a fixing element intended to be driven by the apparatus of the invention, and
  • - Figure 6 is a longitudinal sectional view of a second embodiment of the apparatus of the invention.

En référence à la figure 1, l'appareil de l'invention comporte un tube de canon 1 à l'intérieur duquel est disposé un élément allongé 3 fixé au tube 1 à l'aide d'une vis 2. L'élément allongé 3 comporte deux alésages 4 et 5longitudinaux et sécants, l'alésage 4 étant fermé à l'extrémité gauche, sur la figure, alors que làlésage 5 est fermé à l'extrémité droite sur la figure. Un manchon 7 est vissé sur le tube 1 et comporte- un alésage 6 aligné avec l'alésage 4 de l'élément 3, les alésages 4 et 6 ayant le même diamètre. Un alésage 8 de diamètre plus petit que l'alésage 6 est formé derrière l'alésage 6 pour recevoir un support de cartouche 9 pourvu d'un alésage central formant une chambre de combustion 10 pour une cartouche 11.Referring to Figure 1, the apparatus of the invention comprises a barrel tube 1 to the interior of which is disposed an elongated element 3 fixed to the tube 1 by means of a screw 2. The elongated element 3 comprises two bores 4 and 5longitudinal and intersecting, the bore 4 being closed at the left end, in the figure, while the bore 5 is closed at the right end in the figure. A sleeve 7 is screwed onto the tube 1 and comprises a bore 6 aligned with the bore 4 of the element 3, the bores 4 and 6 having the same diameter. A bore 8 of smaller diameter than bore 6 is formed behind bore 6 to receive a cartridge support 9 provided with a central bore forming a combustion chamber 10 for a cartridge 11.

Une masselotte 12 possédant une portion arrière 13 et une portion avant 14 est montée coulissante à l'intérieur de l'élément allongé 3. La portion arrière 13 est montée coulissante dans les alésages 6 et 4 et la portion avant est montée coulissante dans l'alésage 5. La portion arrière 13, à la mise à feu de l'appareil, est entrainée par la pression des gaz de combustion, alors que la portion avant 14 entraîne un élément de fixation, non représenté, ayant été préalablement introduit dans l'alésage 5, entre l'extrémité avant 18 de l'élément 3 et l'extrémité avant 17 de la portion avant 14 de la masselotte 12.A counterweight 12 having a rear portion 13 and a front portion 14 is slidably mounted inside the elongated element 3. The rear portion 13 is slidably mounted in the bores 6 and 4 and the front portion is slidably mounted in the bore 5. The rear portion 13, when the appliance is ignited, is driven by the pressure of the combustion gases, while the front portion 14 drives a fixing element, not shown, having been previously introduced into the bore 5, between the front end 18 of the element 3 and the front end 17 of the front portion 14 of the counterweight 12.

Une paroi 15 est prévue à l'extrémité avant de la portion arrière 13 de la masselotte 12. Ainsi, après la mise à feu, la masselotte 12 est entraînée, ou bien jusqu'à ce que son énergie cinétique soit absorbée par l'assemblage de fixation, ou bien jusqu'à ce que sa paroi 15 vienne en butée contre la paroi de fermeture 16 formée sur l'élément allongé 3.A wall 15 is provided at the front end of the rear portion 13 of the counterweight 12. Thus, after the ignition, the counterweight 12 is driven, or until its kinetic energy is absorbed by the assembly attachment, or until its wall 15 abuts against the closure wall 16 formed on the elongate element 3.

Ainsi, la masselotte 12 comporte une portion arrière 13, une portion avant 14 décalées transversalement par rapport à la direction longitudinale du canon et conformées pour coulisser respectivement dans les deux alésages 4 et 5. L'extrémité avant de l'alésage 4 dans lequel coulisse la portion arrière 13 de la masselotte 12 est disposée en avant de l'extrémité arrière de l'alésage 5 dans lequel coulisse la portion avant 14 de la masselotte 12. En outre, l'extrémité avant de l'alésage 5 dans lequel coulisse la portion avant 14 de la masselotte 12 est disposée en avant de l'extrémité avant de l'alésage 4 dans lequel coulisse la portion arrière 13 de la masselotte 12.Thus, the counterweight 12 comprises a rear portion 13, a front portion 14 offset transversely relative to the longitudinal direction of the barrel and shaped to slide respectively in the two bores 4 and 5. The front end of the bore 4 in which slides the rear portion 13 of the counterweight 12 is arranged in front of the rear end of the bore 5 in which the front portion 14 of the counterweight 12 slides. In addition, the front end of the bore 5 in which the slide front portion 14 of the counterweight 12 is disposed in front of the front end of the bore 4 in which the rear portion 13 of the counterweight 12 slides.

Pendant le mouvement de la masselotte, sa portion avant 14 pousse, par l'intermédiaire de son extrémité avant 17, la tête 20 d'un élément de fixation 19 (fig. 5) qui pénètre d'abord la pièce à fixer, puis ensuite le matériau-support de cette pièce.During the movement of the counterweight, its front portion 14 pushes, via its front end 17, the head 20 of a fixing element 19 (fig. 5) which first penetrates the part to be fixed, then thereafter the support material for this part.

A cause de contraintes asymétriques, il est nécessaire, pour obtenir un bon assemblage, de guider l'élément de fixation durant son mouvement. Ainsi, une rondelle 21 de même diamètre extérieur que la tête 20 de l'élément de fixation 19 est montée sur la tige de l'élément 19. La section transversale de l'alésage 5 permet à la tête 20 de l'élément de fixation 19 de coulisser librement dans l'alésage pratiquement sans jeu et c'est pourquoi d'ailleurs le moyen 5 a été appelé »alésage«.Because of asymmetric constraints, it is necessary, to obtain a good assembly, to guide the fixing element during its movement. Thus, a washer 21 of the same outside diameter as the head 20 of the fastening element 19 is mounted on the rod of the element 19. The cross section of the bore 5 allows the head 20 of the fastening element 19 to slide freely in the bore practically without play and this is why, moreover, the means 5 has been called "bore".

Dans sa région avant, comme on peut le voir sur la fig. 2, l'alésage 23 comporte une paroi demi-cylindrique prolongée par deux parois planes parallèles et éloignées d'une distance égale au diamètre de cette paroi cylindrique mentionnée ci-dessus. Dans la région d'intersection des alésages 4 et 5, deux portions 22 de la paroi cylindrique subsistent, comme on peut le voir sur la figure 3, et la tête 20 et la rondelle 21 de l'élément de fixation 19 viennent en appui contre ces deux portions 22 ainsi que contre la paroi intérieure de l'élément 3.In its front region, as can be seen in fig. 2, the bore 23 has a semi-cylindrical wall extended by two parallel flat walls and spaced apart by a distance equal to the diameter of this cylindrical wall mentioned above. In the region of intersection of the bores 4 and 5, two portions 22 of the cylindrical wall remain, as can be seen in FIG. 3, and the head 20 and the washer 21 of the fixing element 19 bear against these two portions 22 as well as against the inner wall of the element 3.

En référence à la figure 6, la masselotte 12 comporte une deuxième portion arrière 24 montée coulissante dans un alésage 25 aligné avec l'alésage 5. L'alésage 25 peut même s'étendre à travers la poignée, non représentée, de l'appareil et la portion 24 peut être suffisamment longue pour qu'une partie de celle-ci ne soit jamais exposée à l'action des gaz de combustion.Referring to Figure 6, the counterweight 12 has a second rear portion 24 slidably mounted in a bore 25 aligned with the bore 5. The bore 25 may even extend through the handle, not shown, of the device and the portion 24 can be long enough so that part of it is never exposed to the action of the combustion gases.

L'extrémité arrière de la portion 24 peut avoir la forme d'un tronc de cône agencé pour coopérer, lorsque la masselotte est dans sa position arrière, avec un tronc de cône correspondant formé dans un évidement ménagé dans l'appareil. La coopération par friction de l'extrémité arrière de la portion 24 de la masselotte 12 et du logement dans l'appareil empêche la masselotte de se déplacer durant la manutention de l'appareil, et permet d'obtenir également un effet balistique dans la mesure où la masselotte ne commence à se déplacer qu'à partir d'une pression prédéterminée régnant dans la chambre de combustion après la mise à feu de l'appareil.The rear end of the portion 24 may have the shape of a truncated cone arranged to cooperate, when the counterweight is in its rear position, with a corresponding truncated cone formed in a recess in the device. The frictional cooperation of the rear end of the portion 24 of the counterweight 12 and of the housing in the device prevents the counterweight from moving during the handling of the device, and also makes it possible to obtain a ballistic effect in the measurement where the flyweight only starts to move from a predetermined pressure prevailing in the combustion chamber after the ignition of the appliance.

La portion arrière 24 peut également être combinée avec une butée réglable de manière à faire varier le volume entre l'extrémité arrière de la portion arrière 13 de la masselotte 12 et la cartouche 11.The rear portion 24 can also be combined with an adjustable stop so as to vary the volume between the rear end of the rear portion 13 of the counterweight 12 and the cartridge 11.

La portion arrière 24 peut également comporter des moyens agencés pour tirer la masselotte 12 après l'utilisation de l'appareil. Ceci peut être effectué manuellement ou automatiquement en ouvrant l'appareil. Ces moyens peuvent avoir la forme d'un élément en saillie transversalement à l'appareil et prévu à l'extrémité arrière de la portion 24 qui, lorsqu'on ouvre l'appareil, vient en butée contre une portion fixe de la poignée de l'appareil. Lorsque le canon 1 coulisse vers l'avant, vers la gauche sur les dessins, la masselotte 12 est déplacée à travers les alésages 4, 5 et 6 dans sa position arrière de mise à feu. Cet élément en saillie est disposé pour venir en appui contre une pièce fixe située, avant la propulsion de la masselotte 12, à une distance de cet élément en saillie inférieure à la distance séparant l'extrémité avant, de l'alésage 4 dans lequel coulisse la portion arrière 13 de la masselotte 12, et l'extrémité avant de la portion arrière 13 de la masselotte 12. Cet élément en saillie peut être fixé à la portion 24 de façon détachable. Il est également possible de prévoir que la dite pièce fixe soit fixée sur l'appareil de façon détachable. Ainsi, cet élément en saillie est utilisé comme butée pour la masselotte lorsque la cartouche a fourni trop d'énergie.The rear portion 24 may also include means arranged to pull the counterweight 12 after the use of the device. This can be done manually or automatically by opening the device. These means may have the form of an element projecting transversely to the device and provided at the rear end of the portion 24 which, when the device is opened, abuts against a fixed portion of the handle of the 'apparatus. When the barrel 1 slides forward, to the left in the drawings, the counterweight 12 is moved through the bores 4, 5 and 6 in its rear firing position. This projecting element is arranged to bear against a fixed part located, before the propulsion of the counterweight 12, at a distance from this projecting element less than the distance separating the front end, from the bore 4 in which slides the rear portion 13 of the counterweight 12, and the front end of the rear portion 13 of the counterweight 12. This projecting element can be fixed to the portion 24 so detachable. It is also possible to provide that said fixed part is fixed to the device in a detachable manner. Thus, this projecting element is used as a stop for the counterweight when the cartridge has supplied too much energy.

Cet élément en saillie ou cette portion fixée sur la poignée de l'appareil peuvent être agencés pour être cisaillés.This projecting element or this portion fixed to the handle of the device can be arranged to be sheared.

Afin d'obtenir un effet d'amortissement, il peut être prévu des moyens de ressort entre cet élément en saillie et la portion fixée sur la poignée de l'appareil.In order to obtain a damping effect, spring means can be provided between this projecting element and the portion fixed to the handle of the device.

La deuxième portion arriére 24 peut également servir de dispositif de sécurité lorsqu'on laisse tomber l'appareil, ou de moyen de retenue, empêchant la masselotte de se déplacer si la cartouche est mise à feu. Une rainure peut être ménagée sur la portion 24 pour recevoir un élément de verrouillage ou une détente dans le but de retenir la masselotte aussi longtemps que la gâchette n'a pas actionné la détente pour la dégager de cette rainure.The second rear portion 24 can also serve as a safety device when the device is dropped, or as a retaining means, preventing the counterweight from moving if the cartridge is ignited. A groove can be made on the portion 24 to receive a locking element or a trigger in order to retain the counterweight as long as the trigger has not actuated the trigger to release it from this groove.

Si l'alésage 25 est ouvert à la partie arrière de la poignée de l'appareil, une tige de dimension appropriée peut être introduite dans cet alésage pour pousser la masselotte 12, qu'elle soit ou non pourvue de cette portion 24. Ainsi, un élément de fixation qui aurait été introduit à tort dans l'appareil pourra être éjecté.If the bore 25 is open at the rear part of the handle of the apparatus, a rod of suitable size can be introduced into this bore to push the counterweight 12, whether or not it is provided with this portion 24. Thus, a fastener which has been wrongly inserted into the device may be ejected.

La paroi frontale 15 de la masselotte 12 peut avantageusement constituer des moyens de butée pour la masselotte lorsque l'énergie de la cartouche est trop élevée. Cette paroi peut être agencée pour recevoir par vissage un petit piston 26 destiné à être reçu dans un logement 27, de même section, ménagé dans la paroi 16 de l'élément allongé 3, permettant ainsi d'obtenir un amortissement pneumatique. Le logement 27 peut également être rempli d'un matériau élastique. Les moyens 26 et 27 peuvent être intervertis, le petit piston étant alors fixé à la paroi 16.The front wall 15 of the counterweight 12 can advantageously constitute stop means for the counterweight when the energy of the cartridge is too high. This wall can be arranged to receive by screwing a small piston 26 intended to be received in a housing 27, of the same section, formed in the wall 16 of the elongate element 3, thus making it possible to obtain pneumatic damping. The housing 27 can also be filled with an elastic material. The means 26 and 27 can be reversed, the small piston then being fixed to the wall 16.

Le petit piston et son logement peuvent être utilisés comme marteau et enclume pour une rondelle métallique disposée dans une fente 28 ménagée dans la paroi 16. Cette portion avant 16 de l'élément 3 peut également être montée pour coulisser contre l'action de moyens élastiques d'un système d'amortissement externe.The small piston and its housing can be used as a hammer and anvil for a metal washer disposed in a slot 28 formed in the wall 16. This front portion 16 of the element 3 can also be mounted to slide against the action of elastic means. an external depreciation system.

A l'aide d'une portion de butée avant réglable de l'élément allongé 3, la position relative de la paroi frontale 18 et des éléments restants de l'appareil peut varier de manière à contrôler la surpuissance de la portion avant 14 de la masselotte 12.With the aid of an adjustable front stop portion of the elongated element 3, the relative position of the front wall 18 and of the remaining elements of the apparatus can vary so as to control the overpower of the front portion 14 of the counterweight 12.

La masselotte 12 peut être formée de différentes pièces assemblées, des moyens d'amortissement pouvant être interposés entre ces pièces.The counterweight 12 can be formed from different assembled parts, damping means being able to be interposed between these parts.

De même, la partie centrale de la masselotte 12 peut être affaiblie dans un endroit approprié, de manière à retenir à l'intérieur du canon de l'appareil, en cas de fracture, une partie cassée de cette masselotte.Similarly, the central part of the counterweight 12 can be weakened in an appropriate place, so as to retain inside the barrel of the apparatus, in the event of a fracture, a broken part of this counterweight.

Claims (16)

1. Fastener driving tool comprising a barrel (1) and a driving piston (12) adapted to slide within the barrel under the action of combustion gases produced by the deflagration of an explosive load (11) and to propel a fastener (19) previously inserted into the barrel, characterized in that the driving piston (12) comprises a rearward portion (13), which is driven by the pressure of the combustion gases, and a forward portion (14), which drives a fastener (19), the two portions (13 and 14) extend parallely to each other and are offset transversely of the longitudinal direction of the barrel (1), the portions (13 and 14) slide within two intersecting, longitudinal and parallel bores (4 and 5), the bore (5) in which the forward portion (14) slides being open at the forward end of the barrel (18) and the bore (4) in which the rearward portion (13) slides being open towards the combustion chamber (10), and in the intersecting region, the bores are connected by a slot receiving the connecting zone of the forward (14) and rearward portion (13) of the driving piston (12).
2. Tool as claimed in claim 1, wherein the forward end of the bore (4) in which the rearward portion (13) of the driving piston slides is disposed forwards of the rearward end of the bore (5) in which the forward portion (14) of the driving piston slides.
3. Tool as claimed in one of claims 1 and 2, wherein the forward end of the bore (5) in which the forward portion (14) of the driving piston slides is disposed forwards of the forward end of the bore (4) in which the rearward portion (13) of the driving piston slides.
4. Tool as claimed in one of claims 1 to 3, in which the driving piston (12) comprises a further rearward portion (24) adapted to slide within a third bore (25) provided in the rearward portion of the barrel.
5. Tool as claimed in claim 4, wherein the rearward ends of said further rearward portion (24) of the driving piston (12) and said third bore (25) are truncated.
6. Tool as claimed in one of claims 4 and 5, wherein the third bore (25) comprises a longitudinally adjustable rearward end wall.
7. Tool as claimed in one of claims 4 to 6, wherein the rearward end of said further rearward portion (24) of the driving piston is provided with a member extending transversely out of said third bore (25).
8. Tool as claimed in claim 7, wherein resilient means is provided for abutting said extension member and a fixed portion of the tool.
9. Tool as claimed in one of claims 4 to 8, wherein the rearward end of said further rearward portion (24) of the driving piston (12) is adapted to engage means adapted for holding said further rearward portion.
10. Tool as claimed in one of claims 1 to 3, wherein a third bore (25) is provided in the rearward portion of the barrel, communicating with the exterior of the tool and with the bore (5) of the forward portion (14) of the driving piston.
11. Tool as claimed in claim 7, wherein said extension member is adapted to abut a portion secured onto the tool disposed, prior to the propelling of the driving piston, at a distance from the extension member shorter than the distance between the forward end of the bore in which the rearward portion of the driving piston slides, and the forward end of the rearward portion of the driving piston.
12. Tool as claimed in claim 11, wherein said extension member is loosably secured onto said further rearward portion of the driving piston.
13. Tool as claimed in one of claims 11 and 12, wherein said portion is loosably secured onto the tool.
14. Tool as claimed in one of claims 1 to 13, wherein the forward end of the rearward portion of the driving piston (12) is provided with a cushioning piston (26) adapted to be received within a corresponding recess (27) provided at the forward end of the bore (4) in which said rearward portion (13) of the driving piston slides.
15. Tool as claimed in claim 14, wherein the recess (27) is filled with resilient material.
16. Tool as claimed in claim 14, wherein the recess communicates with the exterior of the tool for receiving driving piston energy absorption means.
EP80400477A 1979-04-10 1980-04-09 Nailing tool including a percussion bolt Expired EP0018870B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80400477T ATE1935T1 (en) 1979-04-10 1980-04-09 SETTING TOOL WITH ONE STRIKE PIN.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7912654A GB2047604B (en) 1979-04-10 1979-04-10 Cartridge-actuated fastener-driving tools
GB7912654 1979-04-10

Publications (2)

Publication Number Publication Date
EP0018870A1 EP0018870A1 (en) 1980-11-12
EP0018870B1 true EP0018870B1 (en) 1982-12-08

Family

ID=10504478

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80400477A Expired EP0018870B1 (en) 1979-04-10 1980-04-09 Nailing tool including a percussion bolt

Country Status (13)

Country Link
US (1) US4333595A (en)
EP (1) EP0018870B1 (en)
JP (2) JPS569178A (en)
AR (1) AR225919A1 (en)
AT (1) ATE1935T1 (en)
AU (1) AU541925B2 (en)
BR (1) BR8002174A (en)
CA (1) CA1142702A (en)
DE (1) DE3061254D1 (en)
ES (1) ES490446A0 (en)
GB (1) GB2047604B (en)
NZ (1) NZ193295A (en)
ZA (1) ZA801853B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4695279B2 (en) * 2001-03-21 2011-06-08 日華化学株式会社 Flame retardant processing agent, flame retardant processing method, and flame retardant processed fiber
BR0213853A (en) * 2001-11-02 2004-08-31 Poly Systems Pty Ltd Nail trigger
JP3920691B2 (en) 2002-04-12 2007-05-30 日華化学株式会社 Flame-retardant finishing agent, flame-retardant processing method, and flame-retardant processed product
US9771769B2 (en) 2014-04-28 2017-09-26 Owen Oil Tools Lp Devices and related methods for actuating wellbore tools with a pressurized gas

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1137446A (en) * 1915-03-18 1915-04-27 Walter A Gruenewald Hydrocarbon-engine.
US3040326A (en) * 1958-06-18 1962-06-26 Olin Mathieson Fastener device
US3044071A (en) * 1960-04-06 1962-07-17 Behrend Herbert Explosive actuated tool
FR1277541A (en) * 1961-01-10 1961-12-01 Improvements to reciprocating motor or operator piston machines
JPS433585Y1 (en) * 1964-09-03 1968-02-14
DE1478797C3 (en) * 1965-07-05 1975-12-04 Anstalt Fuer Montage-Technik, Vaduz Powder-powered fastening tool with a fastener guide and a piston stop
US3338141A (en) * 1965-07-16 1967-08-29 Olin Mathieson Power-actuated piston tool

Also Published As

Publication number Publication date
AU541925B2 (en) 1985-01-31
JPS569178A (en) 1981-01-30
AR225919A1 (en) 1982-05-14
AU5726680A (en) 1980-10-16
US4333595A (en) 1982-06-08
GB2047604A (en) 1980-12-03
NZ193295A (en) 1984-03-16
JPS6258173U (en) 1987-04-10
EP0018870A1 (en) 1980-11-12
DE3061254D1 (en) 1983-01-13
ES8101443A1 (en) 1980-12-16
ZA801853B (en) 1981-04-29
CA1142702A (en) 1983-03-15
ATE1935T1 (en) 1982-12-15
GB2047604B (en) 1983-06-22
ES490446A0 (en) 1980-12-16
BR8002174A (en) 1980-11-25

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