EP0830920B1 - Outil de scellement et un ressort de rappel pour cet outil - Google Patents

Outil de scellement et un ressort de rappel pour cet outil Download PDF

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Publication number
EP0830920B1
EP0830920B1 EP97115895A EP97115895A EP0830920B1 EP 0830920 B1 EP0830920 B1 EP 0830920B1 EP 97115895 A EP97115895 A EP 97115895A EP 97115895 A EP97115895 A EP 97115895A EP 0830920 B1 EP0830920 B1 EP 0830920B1
Authority
EP
European Patent Office
Prior art keywords
driver according
stud driver
stiffening elements
spring
piston
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
EP97115895A
Other languages
German (de)
English (en)
Other versions
EP0830920A1 (fr
Inventor
Gerd Dr. Kellner
Axel Ziegler
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.)
Adolf Wuerth GmbH and Co KG
Original Assignee
Adolf Wuerth GmbH and Co KG
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 Adolf Wuerth GmbH and Co KG filed Critical Adolf Wuerth GmbH and Co KG
Priority to DK97115895T priority Critical patent/DK0830920T3/da
Publication of EP0830920A1 publication Critical patent/EP0830920A1/fr
Application granted granted Critical
Publication of EP0830920B1 publication Critical patent/EP0830920B1/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

Definitions

  • the invention is based on a bolt-setting or pushing device, with the help of which a fastener, usually in the form of a nail or bolt can be.
  • the bolt pusher contains a propellant piston that passes through the propellant gases after ignition of a cartridge and driven by its Feed movement drives the bolt.
  • a bolt-driving tool of this type is already known (US Pat. No. 3,331,546), in which this purpose, a variety of disc springs around a piston rod Driving piston is arranged.
  • the plate springs preferably consist of Polyurethane and are alternately arranged upside down, so that one Disc spring package from disc springs that are not connected.
  • the return spring can be integrally formed as a cylindrical sleeve, so that the restoring force results from compression of the restoring spring. she can also from several individual parts arranged between rigid elements be constructed.
  • a return spring is present, the is designed as a cylindrical sleeve.
  • the restoring force is also here Compression of the return spring causes.
  • the invention has for its object a bolt-driving tool to create, in which the driving piston after setting the fastener is reset and the device has a long service life without changing the spring.
  • the invention is also based on the object of a spring to create for such a bolt gun.
  • the invention proposes a bolt-setting tool with the features mentioned in claim 1 and a spring for this with the features mentioned in claim 15 in front. Developments of the invention are the subject of dependent claims.
  • the Driving piston a piston rod with a reduced diameter has at least part of its length from the sleeve-like spring is surrounded.
  • the spring proposed by the invention is used during assembly of the device simply placed over the piston rod and the device is then assembled. You no longer have to pay attention to it be that the individual disc springs always alternate be used in the reverse position.
  • the spring between you the movement of the driving piston non-participating part of the device and the driving piston.
  • the spring therefore acts directly on the driving piston.
  • the spring cooperates with the driving piston Braking element attacks for this. This means, that towards the end of the setting movement of the driving piston, if so the spring is tightened more, this movement is partly converted into a braking movement by the braking element.
  • the spring formed in this way can, for example be a tension spring. However, it is particularly favorable if the Spring is designed as a compression spring so that when you set of the fastener is stressed.
  • the spring has stiffening elements distributed over its length, that don't deform themselves.
  • the stiffening elements can in particular from a harder and / or other Material. This causes the spring to deform on small areas between two reinforcement elements concentrated so that the deviation of the spring in the Compression case kept small by the approximately cylindrical shape can be.
  • the Stiffening elements during the movement of the driving piston be guided by this and / or by the piston raceway. So it can not happen that the elastomeric material existing spring during the very fast insertion movement is deformed on one side or convoluted so that it hinders the insertion movement of the piston or else is destroyed by this.
  • the stiffening elements are metallic washers, their outer diameter corresponds approximately to the inside diameter of the piston raceway, so that they are guided on their outside. Furthermore can their inside diameter is about the outside diameter of the piston rod correspond so that they are also guided on the inside be prevented from jamming.
  • the spring with the Reinforcing elements is vulcanized together. This creates a one-piece spring that can be manufactured as a single element, which has all the desired properties.
  • the spring has a wall thickness has, which is at most half as large, preferably is at most a third of the difference between the radius of the reinforcing elements and the radius of the inner opening of the reinforcement elements. This will ensure that the spring is a relative in the compressed state has small axial length, which is essentially only by the thickness of all reinforcing elements is determined, so that lie close to each other on a block.
  • the sleeve-like spring is advantageously close to the Inner opening of the reinforcement elements and therefore nearby arranged the piston rod. Their deformation therefore takes place in primarily radially outwards.
  • the spring In the undeformed state, the spring can preferably be a cylindrical one Have shape.
  • the reinforcing elements can in particular be arranged equidistantly , which among other things means that there is no front and rear ends of the spring there.
  • the orientation the spring when assembling the device is therefore not critical.
  • the reinforcing elements can advantageously be arranged in this way be that their mutual distance is about half their size Corresponds to diameter.
  • Fig. 1 shows a simplified longitudinal section through a Bolt thruster according to the invention.
  • the bolt pusher according to the invention includes a rear housing 1 in which including the facilities for feeding and igniting one Propellant charge are included. These details are not shown.
  • the piston sleeve 2 is accommodated in the housing 1, which has a cylindrical space 3 on its inside forms.
  • a driving piston 4 housed, with the help of seals, not shown is sealed off from room 3.
  • the driving piston 4 can to be moved in the cylinder space 3. This shifting movement is indicated by a on the right in Fig. 1 of the Driving piston 4 ignited propellant charge.
  • a ring element 5 made of elastomer material is accommodated, that abuts an end wall 6 of the head sleeve 11 and one Brake buffer forms.
  • On the end wall 6 facing away Side of the brake buffer 5 is located inside the sleeve 2 sliding brake cone 7.
  • the brake cone 7 has one widening in a funnel shape in the direction of the driving piston 4 Inner opening 8.
  • a piston rod 9 attached in its first to itself the driving piston 4 immediately adjacent half first diameter and in the following, for free end towards a second, again has reduced diameter.
  • the return spring 10 is approximately sleeve-shaped and extends between the piston rod 9 having end face of the driving piston 4 and the corresponding opposite end face of the braking element 7.
  • an outer head sleeve 11 placed a cylindrical interior 12 for receiving of the actual fastener.
  • the floor of the cylindrical interior 12 has an opening, through which the front end of the piston rod 9 projects.
  • the free end face 14 annular is formed and slightly opposite the front edge 15 of the Head sleeve 11 protrudes.
  • the mounting sleeve 13 goes on their Device facing side in a radial flange 16 on the end face of which an elastomeric buffer 17 is attached.
  • the return spring 10 has the shape of a cylindrical, elongated sleeve 18 made of elastomer material through corresponding openings of a variety of reinforcing elements 19 is vulcanized through.
  • the reinforcement elements 19 are arranged at the same distance along the elastomer sleeve 18. They lie with their outer edges at a short distance in front of the inner wall of the cylindrical interior 3.
  • the Reinforcing elements 19 have a central opening coaxially 20 in the form of a circular hole, with which they on the Piston rod 19 are lined up. The inside diameter of this Hole 20 corresponds approximately to the outer diameter of the thicker Area of the piston rod 9.
  • the wall thickness of the elastomer sleeve 18 corresponds approximately to one A quarter to a third of the distance between the outer circumference the thicker part of the piston rod 9 and the inner diameter of the cylinder space 3 or the outer diameter of the driving piston 4.
  • the arrangement of the elastomer sleeve 18 is chosen so that this near the central central opening 20 of the Reinforcing elements 19 is arranged.
  • Fig. 1 shows the device in the starting position in which the Driving piston 4 to almost in front of the rear end of the cylinder space 3 is pushed. In this position, a fastener can inserted into the interior 12 of the head sleeve 11 become. The return spring 10 is relaxed. Now becomes Put a fastener a LPG cartridge ignited, the driving piston 4 moves at high speed from the starting position shown in the Setting position, i.e. 1 to the left. This leads to the return spring is compressed.
  • the deforms Sleeve 18 only in the area between the reinforcing elements 19, in which the material primarily deforms outwards becomes.
  • the spring 10 is shortened like an accordion, whereby the deformation of the elastomer sleeve 18 evenly over the Length of the spring is distributed.
  • Fig. 2 shows an enlarged plan view of a reinforcing element 19.
  • the reinforcing element 19 has the shape of a metallic circular washer 21, for example made of aluminium. Concentric to the central opening 20 is one Circle of smaller circular openings 22 present. This Openings 22 correspond in their arrangement and their diameter the arrangement and the wall thickness of the elastomer sleeve 18.
  • the elastomer sleeve 18 is passed through these holes 22 vulcanized, connecting with the metallic Discs 21 takes place. This creates one as a single Component trained spring due to the reinforcing elements secured in the arrangement of FIG. 1 against buckling is.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Springs (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Sawing (AREA)
  • Wire Processing (AREA)

Claims (15)

  1. Outil de scellement doté
    1.1 d'un boítier (1),
    1.2 d'un piston (4) placé à l'intérieur du boítier (1) et y effectuant des mouvements aller et retour,
    1.2.1 pouvant être actionné par une charge propulsive et
    1.2.2 conçu pour la mise en place d'un élément de fixation, ainsi que
    1.3 d'un ressort de rappel (10) dans un matériau élastique déformable, notamment un matériau élastomère, pour le mouvement de retour du piston (4) jusqu'à sa position de départ après la mise en place de l'élément de fixation,
    1.4 présentant, répartis sur toute sa longueur, des éléments de renforcement (19) pour l'essentiel non déformables,
       caractérisé par le fait que
    1.5 la partie élastomère du ressort de rappel (10) est constituée d'une seule pièce et
    1.6 formée en manchon (18).
  2. Outil de scellement conforme à la revendication 1 dont le piston (4) présente une tige (9) au diamètre réduit, entourée sur au moins une partie de sa longueur par le ressort de rappel (10) formé en manchon.
  3. Outil de scellement conforme à la revendication 1 ou 2 dont le ressort de rappel (10) s'étend entre une (4) pièce de l'appareil (7) ne suivant pas le mouvement du piston (4) et le piston lui-même.
  4. Outil de scellement conforme à l'une des revendications précédentes dont le ressort de rappel (10) agit sur un élément de freinage (7) concourant avec le piston (4) pour ce dernier.
  5. Outil de scellement conforme à l'une des revendications précédentes dont le ressort de rappel (10) est un ressort de pression.
  6. Outil de scellement conforme à l'une des revendications précédentes dont les éléments de renforcement (19) sont entraínés pendant le mouvement du piston (4) par ce dernier et/ou par son glissoir.
  7. Outil de scellement conforme à l'une des revendications précédentes dont les éléments de renforcement (19) sont de préférence des disques lisses (21) de métal, ébonite ou matière plastique dont le diamètre extérieur correspond approximativement au diamètre intérieur du glissoir du piston et le diamètre intérieur approximativement au diamètre extérieur de la tige du piston (9).
  8. Outil de scellement conforme à l'une des revendications précédentes dont les éléments de renforcement (19) et le manchon (18) sont vulcanisés ensemble.
  9. Outil de scellement conforme à l'une des revendications précédentes dont le manchon (18) présente une épaisseur de paroi égale au plus à la moitié de la différence entre le rayon des éléments de renfort (19) et le rayon de leur ouverture intérieure (20).
  10. Outil de scellement conforme à la revendication 9 dont le manchon (18) est placé à un endroit plus proche de l'ouverture intérieure (20) des éléments de renfort que de leur périmètre extérieur.
  11. Outil de scellement conforme à l'une des revendications précédentes dont le ressort de rappel (10) non déformé est cylindrique.
  12. Outil de scellement conforme à l'une des revendications précédentes dont les éléments de renfort (19) sont disposés à équidistance l'un de l'autre.
  13. Outil de scellement conforme à l'une des revendications 1 à 11 dont les éléments de renfort (19) sont placés à des distances différentes les uns des autres, notamment à une plus courte distance au niveau des extrémités du ressort.
  14. Outil de scellement conforme à l'une des revendications précédentes dont l'écart entre deux éléments de renfort (19) voisins correspond approximativement à la moitié de leur diamètre extérieur.
  15. Ressort en matériau élastomère conforme à l'une des revendications 1 à 14 pour le retour du piston (4) d'un outil de scellement vers sa position de départ après la mise en place d'un élément de fixation, doté d'éléments de renfort (19) répartis sur toute sa longueur et pour l'essentiel non déformables et caractérisé par le fait que la partie élastomère du ressort (10) est constituée d'une seule pièce et formée en manchon (18).
EP97115895A 1996-09-19 1997-09-12 Outil de scellement et un ressort de rappel pour cet outil Expired - Lifetime EP0830920B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DK97115895T DK0830920T3 (da) 1996-09-19 1997-09-12 Bolteislagningsapparat og tilbagetræksfjeder dertil

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19638341A DE19638341A1 (de) 1996-09-19 1996-09-19 Bolzenschubgerät und Feder dafür
DE19638341 1996-09-19
US09/061,633 US6182881B1 (en) 1996-09-19 1998-04-16 Stud driver and spring therefor

Publications (2)

Publication Number Publication Date
EP0830920A1 EP0830920A1 (fr) 1998-03-25
EP0830920B1 true EP0830920B1 (fr) 2004-07-21

Family

ID=26029563

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97115895A Expired - Lifetime EP0830920B1 (fr) 1996-09-19 1997-09-12 Outil de scellement et un ressort de rappel pour cet outil

Country Status (8)

Country Link
US (1) US6182881B1 (fr)
EP (1) EP0830920B1 (fr)
CN (1) CN1068818C (fr)
AT (1) ATE271444T1 (fr)
DE (2) DE19638341A1 (fr)
DK (1) DK0830920T3 (fr)
ES (1) ES2225921T3 (fr)
PT (1) PT830920E (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19722795A1 (de) * 1997-05-30 1998-12-03 Hilti Ag Setzgerät
DE19800847A1 (de) * 1997-12-04 1999-06-17 Gerd Dr Ing Kellner Gerät zum Setzen eines Befestigungselementes in einen Setzuntergrund und Verwendung des Gerätes
DE10105886C2 (de) * 2001-02-09 2002-12-05 Hilti Ag Kolbenhalterung
US6779698B2 (en) * 2001-10-15 2004-08-24 Hwai-Tay Lin Abrasion-resistant bumper for a nail-driving tool
JP3818234B2 (ja) * 2002-07-19 2006-09-06 日立工機株式会社 釘打機
DE10341384B4 (de) * 2003-09-05 2016-06-23 Hilti Aktiengesellschaft Setzgerät
US7726536B2 (en) * 2004-04-02 2010-06-01 Black & Decker Inc. Upper bumper configuration for a power tool
ATE396838T1 (de) * 2004-12-23 2008-06-15 Black & Decker Inc Kraftwerkzeuggehäuse
DE602005007167D1 (de) * 2004-12-23 2008-07-10 Black & Decker Inc Kraftwerkzeuggehäuse
EP1674213B1 (fr) * 2004-12-23 2008-10-01 BLACK & DECKER INC. Outil motorisé avec un dispositif de refroidissement
DE102005000179A1 (de) * 2005-12-07 2007-06-14 Hilti Ag Hammerschlaggerät
WO2023135041A1 (fr) * 2022-01-14 2023-07-20 Fischerwerke Gmbh & Co. Kg Cloueur à poudre pour enfoncer un élément de fixation dans un support

Citations (1)

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Publication number Priority date Publication date Assignee Title
US3694018A (en) * 1970-07-22 1972-09-26 Gen Motors Corp Elastomeric impact energy dissipator

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US3126630A (en) * 1964-03-31 T catlin
US3099011A (en) * 1955-08-11 1963-07-30 Fastener Corp Pneumatically operated tacker
US2982536A (en) * 1956-11-30 1961-05-02 Mobay Chemical Corp Spring
DE1503045A1 (de) * 1961-09-08 1969-12-11 Olin Mathieson Geraet zum Eintreiben von Befestigungsbolzen in Waende
US3301335A (en) * 1964-04-20 1967-01-31 Thomas E Snelling Energy absorbing structure
US3331546A (en) * 1965-06-01 1967-07-18 Olin Mathieson Piston return and buffer system
DE1603902A1 (fr) * 1965-09-02
CH453249A (de) * 1965-11-09 1968-06-14 Bauer Carl Fa Bolzensetzgerät zum Eintreiben von Bolzen in Bauteile
FR1600417A (fr) 1968-08-05 1970-07-27
DE2221374C2 (de) * 1972-05-02 1983-02-10 Hilti AG, 9494 Schaan Pulverkraftbetriebenes Setzgerät
DE2339163C2 (de) * 1973-08-02 1975-01-30 Karl M. Reich, Maschinenfabrik Gmbh, 7440 Nuertingen Schlagpuffer für Einschlaggeräte
DE2927507C2 (de) * 1979-07-07 1987-03-05 Karl-Heinz 5090 Leverkusen Kerner Bolzenschußapparat
US4332340A (en) * 1980-05-15 1982-06-01 Olin Corporation Piston tool buffer assembly
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FR2608493B1 (fr) * 1986-12-23 1994-09-02 Prospection & Inventions Appareil de scellement a tir indirect
DE19509763A1 (de) * 1995-03-17 1996-09-19 Adolf Wuerth Gmbh & Co Kg Bolzensetzgerät
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Publication number Priority date Publication date Assignee Title
US3694018A (en) * 1970-07-22 1972-09-26 Gen Motors Corp Elastomeric impact energy dissipator

Also Published As

Publication number Publication date
PT830920E (pt) 2004-09-30
DE59711784D1 (de) 2004-08-26
US6182881B1 (en) 2001-02-06
CN1068818C (zh) 2001-07-25
ES2225921T3 (es) 2005-03-16
DE19638341A1 (de) 1998-03-26
ATE271444T1 (de) 2004-08-15
DK0830920T3 (da) 2004-11-29
EP0830920A1 (fr) 1998-03-25
CN1181299A (zh) 1998-05-13

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