EP1013381B1 - Outil de scellement actionné par poudre - Google Patents

Outil de scellement actionné par poudre Download PDF

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Publication number
EP1013381B1
EP1013381B1 EP99811162A EP99811162A EP1013381B1 EP 1013381 B1 EP1013381 B1 EP 1013381B1 EP 99811162 A EP99811162 A EP 99811162A EP 99811162 A EP99811162 A EP 99811162A EP 1013381 B1 EP1013381 B1 EP 1013381B1
Authority
EP
European Patent Office
Prior art keywords
face
driving tool
effective face
carrier
fastener driving
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 - Lifetime
Application number
EP99811162A
Other languages
German (de)
English (en)
Other versions
EP1013381A3 (fr
EP1013381A2 (fr
Inventor
Norbert Heeb
Sybille Renner
Markus Sprenger
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Publication of EP1013381A2 publication Critical patent/EP1013381A2/fr
Publication of EP1013381A3 publication Critical patent/EP1013381A3/fr
Application granted granted Critical
Publication of EP1013381B1 publication Critical patent/EP1013381B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B25C1/082—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a pellet

Definitions

  • the invention relates to a powder-operated setting tool according to the preamble of Claim 1.
  • the cartridges containing propellant are drivable.
  • a setting tool is known for example from FR-1 355 370.
  • This setting tool has a driving piston and a one in a guide cylinder Cartridge having carrier.
  • the driving piston is located in a running bore of the guide cylinder and is parallel can be moved to the setting direction.
  • the carrier is in a direction opposite to the setting direction End region of the guide cylinder arranged and connected to the guide cylinder.
  • the carrier has a first effective area, which by a is formed in the setting direction of the end face of the carrier. From that first A cylindrical projection protrudes centrally from the active surface. This lead is one also provided in the setting direction of the second active surface.
  • the driving piston has an end region pointing in the opposite direction to the setting direction Well, which is open against the setting direction and in which Protrusion of the wearer can penetrate. Since the outer diameter of the projection in corresponds essentially to the inside diameter of the recess, when igniting one Cartridge makes an abrupt transition to an after an initial high acceleration little acceleration when the protrusion leaves the recess. Through this abrupt transition there is a sudden drop in pressure in the combustion chamber, so that the blowing agent can no longer burn completely. This incomplete Combustion leads to excessive contamination of the setting tool.
  • the invention has for its object to a powder-powered setting tool create, in order to completely burn the propellant Driving piston after high pressure in the beginning of a cartridge experiences that changes substantially evenly into a low acceleration, so the pressure drop in the combustion chamber does not occur suddenly.
  • connection channel With the aid of the connection channel according to the invention, acceleration takes place even before or shortly after accelerating the driving piston in the setting direction, part of the Ignition of a cartridge creates propellant gases to the first active surface of the wearer derived. With increasing displacement of the driving piston in the setting direction, the Propellants and thus the pressure generated by the propellants on the first active surface to distribute. The pressure drop in the recess of the driving piston takes place slowly, as soon as the protrusion of the wearer leaves the depression.
  • the connecting channel advantageously extends for manufacturing reasons at least partially over the circumference of the cylindrical projection and over the entire length of the projection.
  • a particularly good and complete combustion of the powdery propellant is achieved when the cross-sectional area of the connecting channel is preferably from 0.04 to 0.5 times the cross-sectional area of the first effective area, reduced by the second effective area, equivalent.
  • the guide cylinder 1 shown in the drawing is part of a whole shown powder-powered setting tool and has a central bore 2 in which a driving piston 6 is axially displaceable.
  • the guide cylinder 1 is in a housing of the setting tool, not shown, can be moved parallel to the setting direction arranged and has a connecting bore 2 with the atmosphere Outflow channel 9.
  • This carrier 3 has one cartridge receptacle 10 widening counter to the setting direction. From one in The first effective surface 4 pointing in the direction of setting projects from a centrally arranged cylindrical one Projection 11 with the diameter D1 and a second pointing in the setting direction Effective area 5. In this second effective area 5 there is a mouth Connecting bore 15 which connects the cartridge receptacle 10 with the barrel bore 2 combines.
  • the driving piston 6 is composed of a head 8 and a shaft 7 adjoining the head 8 in the setting direction, the diameter of which is smaller than the diameter of the head 8.
  • the diameter of the head 8 essentially corresponds to the diameter D of the barrel bore 2
  • a cylindrical recess 12 with the inside diameter D2 extends in the head 8 from a free end of the driving piston 6 pointing against the setting direction - a stop surface 13.
  • the projection 11 of the carrier 3 projects into this recess 12.
  • the length L1 of the projection 11 measured parallel to the setting direction corresponds to 0.5 to 0.9 times the depth L2 of the recess 12.
  • the recess 12 is adjacent, for example tapering bottom area that tapers in the setting direction.
  • a connecting channel 14 extends in the form of an annular gap from the second active surface 5 to the first active surface 4 of the carrier 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Claims (5)

  1. Outil de scellement par explosif comprenant un piston-poussoir (6) disposé de manière déplaçable dans un alésage (2) d'un cylindre de guidage (1) et un support (3) qui est relié au cylindre de guidage (1) et qui comporte, dans une zone extrême orientée à l'opposé de la direction de scellement, un logement de cartouche (10) ainsi que, dans une zone extrême orientée dans la direction de scellement, une première surface active (4), de laquelle dépasse une saillie cylindrique (11) dont la face frontale, côté direction de scellement, forme une seconde surface active (5), et le piston-poussoir (6) comporte une surface de butée (13) qui est apte à coopérer avec la première surface active (4) et à partir de laquelle un renfoncement cylindrique (12) recevant la saillie cylindrique (11) du support (3) s'étend dans la direction de scellement, caractérisé en ce que la seconde surface active (5) est reliée à la première surface active (4) par l'intermédiaire d'un canal de liaison (14).
  2. Outil de scellement selon la revendication 1, caractérisé en ce que le canal de liaison (14) s'étend au moins en partie sur la circonférence de la saillie cylindrique (11) et sur toute la longueur (L1) de la saillie (11).
  3. Outil de scellement selon la revendication 1 ou 2, caractérisé en ce que le canal de liaison (14) est formé par un interstice annulaire situé entre le contour extérieur de la saillie cylindrique (11) et le corps intérieur du renfoncement cylindrique (12).
  4. Outil de scellement selon la revendication 3, caractérisé en ce que la section transversale du canal de liaison (14) correspond à 0,04 à 0,5 fois la section transversale de la première surface active (4), minorée de la seconde surface active (5).
  5. Outil de scellement selon une des revendications 1 à 4, caractérisé en ce que la longueur (L1) de la saillie cylindrique (11) correspond à 0,5 à 0,9 fois la profondeur (L2) du renfoncement cylindrique (12).
EP99811162A 1998-12-24 1999-12-15 Outil de scellement actionné par poudre Expired - Lifetime EP1013381B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19860194 1998-12-24
DE19860194A DE19860194A1 (de) 1998-12-24 1998-12-24 Pulverkraftbetriebenes Setzgerät

Publications (3)

Publication Number Publication Date
EP1013381A2 EP1013381A2 (fr) 2000-06-28
EP1013381A3 EP1013381A3 (fr) 2000-07-26
EP1013381B1 true EP1013381B1 (fr) 2003-09-24

Family

ID=7892749

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99811162A Expired - Lifetime EP1013381B1 (fr) 1998-12-24 1999-12-15 Outil de scellement actionné par poudre

Country Status (6)

Country Link
US (1) US6289789B1 (fr)
EP (1) EP1013381B1 (fr)
JP (1) JP2000210881A (fr)
AU (1) AU756123B2 (fr)
CA (1) CA2292060C (fr)
DE (2) DE19860194A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10103893A1 (de) * 2001-01-30 2002-08-01 Hilti Ag Setzgerät
AUPR857501A0 (en) * 2001-10-30 2001-11-29 Cetram Pty Limited Fastener driving tools
DE10164202A1 (de) * 2001-12-27 2003-07-17 Hilti Ag Kolben für Setzgeräte
US8002160B2 (en) 2004-08-30 2011-08-23 Black & Decker Inc. Combustion fastener

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1355370A (fr) * 1962-05-07 1964-03-13 Impex Essen Vertrieb Appareil destiné à l'enfoncement de chevilles dans des éléments de construction fixes ou autres
DE1502154A1 (de) * 1963-09-03 1969-06-12 Dynamit Nobel Ag Verfahren zum Abflachen der Spitzendrucke in einem Kolbenantrieb
DE1806568A1 (de) * 1968-11-02 1970-05-27 Tornado Gmbh Geraet zum Eintreiben von Bolzen in Werkstuecke
US6059162A (en) * 1998-10-16 2000-05-09 Illinois Tool Works Inc. Exhaust baffle and spring assisted reset and dampener for powder actuated tool

Also Published As

Publication number Publication date
AU5950299A (en) 2000-06-29
EP1013381A3 (fr) 2000-07-26
DE19860194A1 (de) 2000-06-29
EP1013381A2 (fr) 2000-06-28
CA2292060C (fr) 2006-04-11
JP2000210881A (ja) 2000-08-02
CA2292060A1 (fr) 2000-06-24
US6289789B1 (en) 2001-09-18
AU756123B2 (en) 2003-01-02
DE59907110D1 (de) 2003-10-30

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