EP1500472B1 - Fastener driving tool with safety latch - Google Patents

Fastener driving tool with safety latch Download PDF

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Publication number
EP1500472B1
EP1500472B1 EP04291786A EP04291786A EP1500472B1 EP 1500472 B1 EP1500472 B1 EP 1500472B1 EP 04291786 A EP04291786 A EP 04291786A EP 04291786 A EP04291786 A EP 04291786A EP 1500472 B1 EP1500472 B1 EP 1500472B1
Authority
EP
European Patent Office
Prior art keywords
barrel
shoe
fastener
guide
safety
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.)
Not-in-force
Application number
EP04291786A
Other languages
German (de)
French (fr)
Other versions
EP1500472A1 (en
Inventor
Roland Almeras
Patrick Herelier
Emmanuel Vallon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Societe de Prospection et dInventions Techniques SPIT SAS
Original Assignee
Societe de Prospection et dInventions Techniques SPIT SAS
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 Societe de Prospection et dInventions Techniques SPIT SAS filed Critical Societe de Prospection et dInventions Techniques SPIT SAS
Publication of EP1500472A1 publication Critical patent/EP1500472A1/en
Application granted granted Critical
Publication of EP1500472B1 publication Critical patent/EP1500472B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B25C1/008—Safety devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion pressure
    • B25C1/10—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge
    • B25C1/18—Details and accessories, e.g. splinter guards, spall minimisers
    • B25C1/182—Feeding devices
    • B25C1/184—Feeding devices for nails

Definitions

  • the present application relates to a nail-type or staple-type fastener driving apparatus - it is then a nailer or stapler - comprising a barrel with an arranged element-guide at the front. in order to move backwards when placing the device in abutment, a feed magazine for receiving a loader of fasteners and for inserting an element into the barrel, and bearing safety means arranged for authorizing the driving of a fastening element after the element guide has been retracted and comprising a safety shoe arranged to, in the absence of an element in the barrel, be moved to the safety position and prevent the recoil from guide element.
  • the device concerned here is a so-called indirect fire-sealing pistol, in which a flyweight, intended for driving a point, a buffer or any other similar element, is propelled towards the front under the action of the combustion of a charge of powder or the explosion of a mixture of flammable gas.
  • the element guide is more commonly called a tip guide.
  • This guide is often distinct from the barrel and mounted at the front of the barrel.
  • the front part of the barrel serves as a guide-tip and, in this case, it is the entire barrel which is arranged to be moved backwards when the device is placed in support, as part of support security.
  • the charger comprises an insertion pusher one by one of the fasteners in the barrel of the device, with a pusher advance indicator.
  • advance indicator of the pusher does not allow to know if there is still an element in the barrel or not, that is to say if this element has already been used or not.
  • the invention of the present application aims to overcome this disadvantage and to offer the user of the device the comfort of good information, avoiding the question of whether the barrel of his device is empty or if his device has a malfunction. This problem is solved by an apparatus according to claim 1.
  • the witness comprises a pin integral with the shoe and slidably mounted, from an operating position to a safety position, in a well opening into an opening in the surface of the housing. of the device.
  • the pin has a length such that, in the operating position, its free end is visible in the opening of the well and hidden in the safety position.
  • the shoe and the witness are formed in one piece.
  • the fastener driving apparatus here a sealing pistol, comprises an element guide 4, formed by the front part of the barrel 3 of the pistol 1, and a magazine of FIG. supply 5 in which is received a loader 50 of fasteners, here spikes 2, 7, joined in a string by guide pins 6.
  • the tips 2, 7 are kept aligned and, thanks to a pusher 11, pushed one by one into the barrel, to the rhythm of the shots.
  • the tip guide 4 can slide rearward 21 of the gun when it is supported on a support material 20 in which it is desired to drive a tip.
  • the driving, or the firing, of the tip 7 introduced into the barrel is only possible if the guide-tip bears on the material 20, as represented in FIG. 2.
  • support security means perfectly known to those skilled in the art and therefore not shown, allow shooting only in this case.
  • a safety shoe 8 arranged to prevent the tip guide 4 from moving backwards if the barrel 3 is empty, as represented in FIG.
  • the shoe 8 essentially consists of a substantially parallelepipedal pad 81 having a finger 82, also parallelepipedal, arranged to fit into a groove 9 of the tip guide when the shoe 81 is in the barrel, and to disengage when said pad is pushed out of the barrel, and comprising a cylindrical piston 83 arranged to slide in a well 14 formed in the gun casing.
  • the shoe 8 is pushed transversely to the axis of the barrel by a helical spring 10 surrounding the piston 83, and is guided in this direction by said piston.
  • the action of the spring 10 on the shoe 81 of the shoe 8 is not compensated by the pusher 11 of the loader 50, a tip 7 not being present in the barrel, the finger 82 enters the groove 9 of the guide- tip 4, thus preventing its setting support position and any subsequent shot. If a tip 7 is present, the finger 82 is clear of the groove 9, the tip guide is unlocked and a firing can be performed.
  • a progress indicator of the pusher 11 (not shown) which indicates its position in the magazine 50, and especially if it is in abutment at the top of the magazine, as in FIG. 3, but this indicator is deficient at indicate whether or not the firing of the last tip of the magazine was done, since it does not change position as a result of this firing. The user can then remain uncertain whether there is still a point in the barrel or not.
  • the gun also comprises a control 12 indicating the position of the safety shoe 8.
  • the shoe 8 comprises a pin 13 which it is integral (or monobloc with it) sliding, with the piston 83, in the well 14 which opens into an opening 15 of the surface 16 of the gun housing.
  • the pin 13 is simply an extension of the piston 83.

Abstract

The apparatus has cannon (3) with a guide point (4) to retreat a supply magazine (5). The magazine receives a loader (50) of nail or hook type points (2) and introduces a point (7) in the cannon. A safety shoe (8) moves to a safety position and prevents the retreat of the guide point, in the absence of the point (7) in the cannon. A visual indicator (12) indicates a safety position of the shoe.

Description

La présente demande concerne un appareil d'entraînement d'éléments de fixation du type clou ou agrafe - il s'agit alors d'un cloueur ou d'une agrafeuse - comprenant un canon avec, à l'avant, un guide-élément agencé pour reculer lors d'une mise en appui de l'appareil, un magasin d'alimentation destiné à recevoir un chargeur d'éléments de fixation et à introduire un élément dans le canon, et des moyens de sécurité d'appui, agencés pour n'autoriser l'entraînement d'un élément de fixation qu'après recul du guide-élément et comprenant un sabot de sécurité agencé pour, en l'absence d'élément dans le canon, être déplacé en position de sécurité et empêcher le recul du guide-élément.The present application relates to a nail-type or staple-type fastener driving apparatus - it is then a nailer or stapler - comprising a barrel with an arranged element-guide at the front. in order to move backwards when placing the device in abutment, a feed magazine for receiving a loader of fasteners and for inserting an element into the barrel, and bearing safety means arranged for authorizing the driving of a fastening element after the element guide has been retracted and comprising a safety shoe arranged to, in the absence of an element in the barrel, be moved to the safety position and prevent the recoil from guide element.

Un tel appareil est connu du document EP-A-0 987 086.Such an apparatus is known from EP-A-0 987 086.

L'appareil concerné ici est a priori ce qu'on appelle un pistolet de scellement à tir indirect, dans lequel une masselotte, destinée à l'entraînement d'une pointe, d'un tampon ou de tout autre élément analogue, est propulsée vers l'avant sous l'action de la combustion d'une charge de poudre ou de l'explosion d'un mélange de gaz inflammable.The device concerned here is a so-called indirect fire-sealing pistol, in which a flyweight, intended for driving a point, a buffer or any other similar element, is propelled towards the front under the action of the combustion of a charge of powder or the explosion of a mixture of flammable gas.

Le guide-élément est plus généralement appelé guide-pointe. Ce guide est souvent distinct du canon et monté à l'avant du canon. Parfois, la partie avant du canon fait office de guide-pointe et, dans ce cas, c'est tout le canon qui est agencé pour être déplacé vers l'arrière lors de la mise en appui de l'appareil, dans le cadre de la sécurité d'appui.The element guide is more commonly called a tip guide. This guide is often distinct from the barrel and mounted at the front of the barrel. Sometimes, the front part of the barrel serves as a guide-tip and, in this case, it is the entire barrel which is arranged to be moved backwards when the device is placed in support, as part of support security.

En ce qui concerne le sabot de sécurité, lorsqu'il n'y a pas d'élément de fixation dans le canon, un ressort le pousse vers l'axe du canon sur le trajet de recul du guide-pointe ainsi empêché de reculer. Ce sabot de sécurité a été proposé pour éviter de faire fonctionner l'appareil à vide, ce qui serait néfaste, d'abord parce que presque toute l'énergie de tir serait absorbée par l'appareil lui-même, puis aussi en raison du risque que la masselotte ne pénètre dans le matériau support.As regards the safety shoe, when there is no fastener element in the barrel, a spring pushes it towards the axis of the barrel in the recoil path of the tip guide thus prevented from moving backwards. This safety shoe has been proposed to avoid running the apparatus at idle, which would be detrimental, first because almost all the energy of fire would be absorbed by the apparatus itself, and also because of the risk that the weight enters the support material.

Quant au chargeur, il comporte un poussoir d'introduction un par un des éléments de fixation dans le canon de l'appareil, avec un témoin d'avance du poussoir.As for the charger, it comprises an insertion pusher one by one of the fasteners in the barrel of the device, with a pusher advance indicator.

Mais lorsque le poussoir du chargeur a atteint sa position extrême, la plus avancée dans le chargeur, c'est-à-dire au dernier élément de fixation, le témoin d'avance du poussoir ne permet pas de savoir s'il y a encore un élément dans le canon ou pas, c'est-à-dire si cet élément a déjà été utilisé ou non.But when the loader pusher has reached its extreme position, the most advanced in the loader, that is to say the last fastener, advance indicator of the pusher does not allow to know if there is still an element in the barrel or not, that is to say if this element has already been used or not.

L'invention de la présente demande vise à pallier cet inconvénient et à offrir à l'utilisateur de l'appareil le confort d'une bonne information, lui évitant de s'interroger sur le point de savoir si le canon de son appareil est vide ou si son appareil a un défaut de fonctionnement. Ce problème est résolu par un appareil correspondant à la revendication 1.The invention of the present application aims to overcome this disadvantage and to offer the user of the device the comfort of good information, avoiding the question of whether the barrel of his device is empty or if his device has a malfunction. This problem is solved by an apparatus according to claim 1.

Dans la forme de réalisation de l'appareil de l'invention, le témoin comporte un pion solidaire du sabot et monté coulissant, d'une position de fonctionnement à une position de sécurité, dans un puits débouchant dans une ouverture de la surface du boîtier de l'appareil.In the embodiment of the apparatus of the invention, the witness comprises a pin integral with the shoe and slidably mounted, from an operating position to a safety position, in a well opening into an opening in the surface of the housing. of the device.

Avantageusement, le pion a une longueur telle que, en position de fonctionnement, son extrémité libre est visible dans l'ouverture du puits et cachée en position de sécurité.Advantageously, the pin has a length such that, in the operating position, its free end is visible in the opening of the well and hidden in the safety position.

De préférence, le sabot et le témoin sont formés d'une seule pièce.Preferably, the shoe and the witness are formed in one piece.

L'invention sera mieux comprise à la lumière de la description suivante de l'appareil d'entraînement d'éléments de fixation selon l'invention, en référence au dessin annexé sur lequel :

  • la figure 1 représente une vue en coupe, selon l'axe du canon, de l'appareil de l'invention quand il est chargé et en position de repos ;
  • la figure 2 représente une vue, selon la même coupe, de l'appareil de l'invention quand il est chargé et en position de tir ;
  • la figure 3 représente une vue, selon la même coupe, de l'appareil de l'invention, en position de repos, quand le chargeur est vide , et
  • la figure 4 représente une vue en coupe, selon un plan orthogonal à l'axe du canon et passant par le témoin, de l'appareil de l'invention quand le chargeur est vide.
The invention will be better understood in the light of the following description of the fastener driving apparatus according to the invention, with reference to the appended drawing in which:
  • Figure 1 shows a sectional view, along the axis of the barrel, of the apparatus of the invention when it is loaded and in the rest position;
  • FIG. 2 represents a view, according to the same section, of the apparatus of the invention when it is loaded and in firing position;
  • FIG. 3 represents a view, according to the same section, of the apparatus of the invention, in the rest position, when the loader is empty, and
  • Figure 4 shows a sectional view, along a plane orthogonal to the axis of the barrel and passing through the control, of the apparatus of the invention when the charger is empty.

En référence aux figures 1 et 2, l'appareil 1 d'entraînement d'éléments de fixation, ici un pistolet de scellement, comporte un guide-élément 4, formé par la partie avant du canon 3 du pistolet 1, et un magasin d'alimentation 5 dans lequel est reçu un chargeur 50 d'éléments de fixation, ici des pointes 2, 7, réunies en un chapelet par des pions de guidage 6.With reference to FIGS. 1 and 2, the fastener driving apparatus 1, here a sealing pistol, comprises an element guide 4, formed by the front part of the barrel 3 of the pistol 1, and a magazine of FIG. supply 5 in which is received a loader 50 of fasteners, here spikes 2, 7, joined in a string by guide pins 6.

Dans le chargeur 50, les pointes 2, 7 sont maintenues alignées et, grâce à un poussoir 11, poussées une à une dans le canon, au rythme des tirs.In the magazine 50, the tips 2, 7 are kept aligned and, thanks to a pusher 11, pushed one by one into the barrel, to the rhythm of the shots.

Le guide-pointe 4 peut coulisser vers l'arrière 21 du pistolet lorsqu'il est en appui sur un matériau support 20 dans lequel on veut enfoncer une pointe.The tip guide 4 can slide rearward 21 of the gun when it is supported on a support material 20 in which it is desired to drive a tip.

Conformément à la sécurité dite d'appui, l'entraînement, ou le tir, de la pointe 7 introduite dans le canon n'est possible que si le guide-pointe est en appui sur le matériau 20, comme représenté sur la figure 2. Pour cela, des moyens de sécurité d'appui parfaitement connus de l'homme du métier et donc_non représentés, n'autorisent le tir que dans ce cas.In accordance with the so-called support safety, the driving, or the firing, of the tip 7 introduced into the barrel is only possible if the guide-tip bears on the material 20, as represented in FIG. 2. For this, support security means perfectly known to those skilled in the art and therefore not shown, allow shooting only in this case.

Conformément à une autre mesure de précaution visant à un bon usage du pistolet, il est prévu un sabot de sécurité 8 agencé pour empêcher le guide-pointe 4 de reculer si le canon 3 est vide, comme représenté sur la figure 3.In accordance with another precautionary measure aimed at the proper use of the gun, there is provided a safety shoe 8 arranged to prevent the tip guide 4 from moving backwards if the barrel 3 is empty, as represented in FIG.

Le sabot 8 est essentiellement constitué d'un patin sensiblement parallélépipédique 81 comportant un doigt 82, également parallélépipédique, agencé pour s'encastrer dans une rainure 9 du guide-pointe quand le patin 81 est dans le canon, et pour s'en dégager quand ledit patin est repoussé hors du canon, et comportant un piston 83 cylindrique agencé pour coulisser dans un puits 14 ménagé dans le boîtier du pistolet.The shoe 8 essentially consists of a substantially parallelepipedal pad 81 having a finger 82, also parallelepipedal, arranged to fit into a groove 9 of the tip guide when the shoe 81 is in the barrel, and to disengage when said pad is pushed out of the barrel, and comprising a cylindrical piston 83 arranged to slide in a well 14 formed in the gun casing.

Le sabot 8 est poussé transversalement par rapport à l'axe du canon par un ressort hélicoïdal 10 entourant le piston 83, et est guidé dans cette direction par ledit piston. Quand l'action du ressort 10 sur le patin 81 du sabot 8 n'est pas compensée par le poussoir 11 du chargeur 50, une pointe 7 n'étant pas présente dans le canon, le doigt 82 pénètre dans la rainure 9 du guide-pointe 4, empêchant ainsi sa mise en position d'appui et tout tir ultérieur. Si une pointe 7 est présente, le doigt 82 est dégagé de la rainure 9, le guide-pointe est débloqué et un tir peut être effectué.The shoe 8 is pushed transversely to the axis of the barrel by a helical spring 10 surrounding the piston 83, and is guided in this direction by said piston. When the action of the spring 10 on the shoe 81 of the shoe 8 is not compensated by the pusher 11 of the loader 50, a tip 7 not being present in the barrel, the finger 82 enters the groove 9 of the guide- tip 4, thus preventing its setting support position and any subsequent shot. If a tip 7 is present, the finger 82 is clear of the groove 9, the tip guide is unlocked and a firing can be performed.

Il est prévu un indicateur d'avancement du poussoir 11 (non représenté) qui indique sa position dans le chargeur 50, et notamment s'il se trouve en butée en tête du chargeur, comme sur la figure 3, mais cet indicateur est déficient à indiquer si le tir de la dernière pointe du chargeur a été effectué ou non, puisqu'il ne change pas de position à la suite de ce tir. L'utilisateur peut alors rester dans l'incertitude quant à savoir s'il y a encore une pointe dans le canon ou non.There is provided a progress indicator of the pusher 11 (not shown) which indicates its position in the magazine 50, and especially if it is in abutment at the top of the magazine, as in FIG. 3, but this indicator is deficient at indicate whether or not the firing of the last tip of the magazine was done, since it does not change position as a result of this firing. The user can then remain uncertain whether there is still a point in the barrel or not.

Il est prévu que le pistolet comporte aussi un témoin 12 indiquant la position du sabot de sécurité 8. Pour cela, le sabot 8 comporte un pion 13 duquel il est solidaire (ou monobloc avec lui) coulissant, avec le piston 83, dans le puits 14 qui débouche dans une ouverture 15 de la surface 16 du boîtier du pistolet.It is expected that the gun also comprises a control 12 indicating the position of the safety shoe 8. For this, the shoe 8 comprises a pin 13 which it is integral (or monobloc with it) sliding, with the piston 83, in the well 14 which opens into an opening 15 of the surface 16 of the gun housing.

Dans l'exemple, le pion 13 est simplement un prolongement du piston 83.In the example, the pin 13 is simply an extension of the piston 83.

Quand une pointe 7 est présente dans le canon (figures 1 et 2), le sabot 8 est repoussé par la pointe 7 sous l'action du poussoir 11 du chargeur 50, le pion 13 est en position (F) de fonctionnement et son extrémité libre 17 est visible par l'ouverture 15.When a tip 7 is present in the barrel (Figures 1 and 2), the shoe 8 is pushed by the tip 7 under the action of the pusher 11 of the loader 50, the pin 13 is in position (F) of operation and its end free 17 is visible through the opening 15.

Quand, après le dernier tir, il n'y a plus de pointe 7 dans le canon (figures 3 et 4), le sabot 8 est repoussé par le ressort 10, le pion 13 est en position (S) de sécurité et son extrémité libre 17 est cachée, ce qui lève l'incertitude de l'utilisateur du pistolet.When, after the last shot, there is no more point 7 in the barrel (FIGS. 3 and 4), the shoe 8 is pushed back by the spring 10, the pin 13 is in the safety position (S) and its end free 17 is hidden, which raises the uncertainty of the user of the gun.

Claims (3)

  1. Apparatus (1) for driving fasteners (2) comprising a barrel (3) with, at the front, a fastener guide (4) designed to retreat as the apparatus is pressed against something, a feed magazine (5), intended to receive a loader (50) of fasteners and to introduce one fastener (7) into the barrel, and bearing safety means designed to allow a fastener to be driven only after the fastener guide has retreated and comprising a safety shoe (8) designed to, when there is no fastener (7) in the barrel, be moved into a safe position and prevent the retreat of the fastener guide, characterized in that it comprises a tell-tale (12) of the safe position of the safety shoe (8), which comprises a peg (13) secured to the shoe (8) and mounted to slide, from an operating position (F) to a safe position (S), in a well (14) opening into an opening (15) in the surface (16) of the casing of the apparatus.
  2. Apparatus according to Claim 1, in which the peg (13) has a length such that in the operating position (F) its free end (17) is visible in the opening (15) of the well (14) and hidden in the safe position (S).
  3. Apparatus according to either of Claims 1 and 2, in which the shoe (8) and the tell-tale (12) are formed as a single piece.
EP04291786A 2003-07-23 2004-07-13 Fastener driving tool with safety latch Not-in-force EP1500472B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0308999 2003-07-23
FR0308999A FR2857896B1 (en) 2003-07-23 2003-07-23 APPARATUS FOR DRIVING SECURITY SABOT FASTENING ELEMENTS

Publications (2)

Publication Number Publication Date
EP1500472A1 EP1500472A1 (en) 2005-01-26
EP1500472B1 true EP1500472B1 (en) 2007-03-21

Family

ID=33484692

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04291786A Not-in-force EP1500472B1 (en) 2003-07-23 2004-07-13 Fastener driving tool with safety latch

Country Status (9)

Country Link
US (1) US7059507B2 (en)
EP (1) EP1500472B1 (en)
AT (1) ATE357314T1 (en)
AU (1) AU2004203174B2 (en)
CA (1) CA2473632C (en)
DE (1) DE602004005381T2 (en)
ES (1) ES2283958T3 (en)
FR (1) FR2857896B1 (en)
NZ (1) NZ534131A (en)

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DE19950349B4 (en) * 1999-10-19 2006-07-27 Hilti Ag Setting tool for fastening elements
DE20119463U1 (en) * 2001-11-29 2002-01-24 Hilti Ag Portable, fuel-powered setting tool for fasteners

Also Published As

Publication number Publication date
ES2283958T3 (en) 2007-11-01
NZ534131A (en) 2004-12-24
EP1500472A1 (en) 2005-01-26
CA2473632A1 (en) 2005-01-23
AU2004203174A1 (en) 2005-02-10
US7059507B2 (en) 2006-06-13
CA2473632C (en) 2008-03-18
FR2857896A1 (en) 2005-01-28
AU2004203174B2 (en) 2007-01-25
US20050017046A1 (en) 2005-01-27
FR2857896B1 (en) 2007-04-27
DE602004005381D1 (en) 2007-05-03
DE602004005381T2 (en) 2007-11-29
ATE357314T1 (en) 2007-04-15

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