EP0346275B1 - Pulverkraftbetriebenes Setzgerät - Google Patents

Pulverkraftbetriebenes Setzgerät Download PDF

Info

Publication number
EP0346275B1
EP0346275B1 EP89810360A EP89810360A EP0346275B1 EP 0346275 B1 EP0346275 B1 EP 0346275B1 EP 89810360 A EP89810360 A EP 89810360A EP 89810360 A EP89810360 A EP 89810360A EP 0346275 B1 EP0346275 B1 EP 0346275B1
Authority
EP
European Patent Office
Prior art keywords
piston
driving
spring
recess
brake
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
EP89810360A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0346275A1 (de
Inventor
Gerhard Ehmig
Peter Jochum
Erich Maurer
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
Priority to AT89810360T priority Critical patent/ATE72160T1/de
Publication of EP0346275A1 publication Critical patent/EP0346275A1/de
Application granted granted Critical
Publication of EP0346275B1 publication Critical patent/EP0346275B1/de
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 relates to a powder-powered setting tool with a piston guide and a driving piston displaceable therein, a recess radially open to the driving piston with a brake ball and spring for the brake ball being provided in the piston guide.
  • the powder force is transmitted via a driving piston to a fastening element to be set.
  • the driving piston which is mounted in a piston guide, is pushed forward by the powder force from an ignition-ready position in the driving-in direction. After the setting process has been completed, the driving piston must be moved back to the ignition-ready position. Holding means ensure that the driving piston remains in the ignition-ready position until its holding force is exceeded by the powder force.
  • a setting tool which has a holding means in the form of a spring-loaded brake ball which is always pressed against a shaft of the driving piston.
  • the brake ball engages in an annular groove on the shaft.
  • a disadvantage of this known holding means is that the holding force also acts when the driving piston is pushed back into the ignition-ready position and consequently makes it difficult to push the driving piston back.
  • the invention has for its object to provide a setting tool, in which the pushing back of the driving piston in the ignition-ready position is possible without braking.
  • the object is achieved in that the axial extent of the recess exceeds the diameter of the brake ball and the spring in relation to the piston axis is designed as a spring ring exerting a spring force acting radially towards the driving piston, on the inner contour of which a support surface acting on the brake ball is arranged, which is inclined to the piston axis to form an acute angle that opens against the driving direction, so that the brake ball is below Tensioning the spring is driven to the driving piston and comes to rest at the end of the recess in the direction of driving.
  • the brake ball In the ignition-ready position, the brake ball is supported on the spring ring and on the end of the recess facing away from the driving-in direction against the outer surface of the shaft of the driving piston. If the driving piston moves in the driving-in direction, it takes the braking ball with it in the recess in the driving-in direction as it begins to move while rolling in the recess.
  • the brake ball tensions the spring ring and comes into contact with the end of the recess on the driving direction side, the supporting surface introducing the radial spring force of the spring ring into the braking ball in a component that acts counter to the driving direction and acts radially toward the driving piston.
  • the brake ball pressed radially against the shaft of the drive piston by the spring ring exerts a braking effect on the drive piston.
  • the braking effect can be canceled by moving the driving piston slightly to the rear by moving the braking ball against the driving direction and releasing the spring ring. In this case, a force acting against the driving direction is applied to the driving piston by the brake ball. After the spring ring has been released, it no longer presses the brake ball against the shaft of the driving piston.
  • the axial extent of the recess suitably corresponds to 1.2 to 2 times the diameter of the brake ball. This design ensures that the respective functional position is achieved after a short movement of the driving piston and thus rapid control of the braking effect.
  • a further advantage is that the spring ring simultaneously applies the same forces to all brake balls.
  • the support surface of the spring ring is expediently inclined at an acute angle of 3 ° to 9 °.
  • the setting tool shown in FIG. 1 has a housing 1 with a handle 2 and trigger 3.
  • a stop sleeve 4 is screwed to the end of the housing 1 on the driving direction.
  • a two-part piston guide 5 is slidably mounted in the housing.
  • the piston guide 5 consists of a rear part 6 and a front part 7.
  • In the piston guide 5 there is a driving piston 8 with a head 9 guided in part 6 and a shaft 11 guided in part 7.
  • a guide bore 12 of part 6 opens out at the rear an inflow channel 13 for the expansion gases of a powder propellant charge.
  • the part 6 has openings 14 for discharging the air located in front of the head 9 when the driving piston 8 advances.
  • the front end region of part 6 concentrically overlaps the rear region of part 7.
  • Part 7 projects beyond stop sleeve 4 forward and thus forms a muzzle tube.
  • the rear end of the part 7 protrudes in the form of a tubular extension into the guide bore 12 and thus forms a stop 15
  • recesses 16 are provided diametrically opposite one another, radially inward and outward.
  • a brake ball 17 is mounted in each recess 16, the axial extent of the recesses 16 being 1.5 times the diameter of the brake balls 17.
  • the recesses 16 are narrowed inwards to prevent the brake balls 17 from falling through.
  • the brake balls 17 rest radially on the shaft 11 of the drive piston 8. They are supported on the outside on a spring 18 in the form of a spring ring.
  • the spring 18 has a circumferential support surface 18a formed by the inner contour.
  • the support surface 18a is inclined to the piston axis to form an acute angle a, which opens counter to the driving direction, as illustrated in FIG. 2.
  • a cylindrical zone of the inner contour adjoins the support surface 18a to the front, ie in the driving-in direction.
  • the spring 18 is cut through a slot 18b to allow expansion and tensioning.
  • an annular groove 19 is provided in part 7, which passes through the recesses 16. The bottom of the annular groove 19 limits the radial deflection of the spring 18.
  • axial bores 21 are also provided, the mouth of which points forward and lies in the axial projection of the brake balls 17.
  • cylinder springs 22 are supported, which bring the brake balls 17 forward into contact with the support surface 18a.
  • the brake balls 17 migrate against the driving direction at the beginning of the displacement and run on the end 16b of the recess 16 facing away from the driving direction, as shown in FIG. 3.
  • the brake balls 17 come out of the clamping range of the spring 18 again, whereby the braking effect against the drive piston 8 is canceled.
  • the driving piston 8 can be brought into the ignition-ready position without braking effect.
  • the driving piston 8 If the driving piston 8 is in the ready-to-ignite position, there is the possibility that it shifts slightly in the driving-in direction before the powder propellant is ignited, for example after the setting tool has been placed hard on the ground. As a result of this displacement, the spring 18 is tensioned over the brake balls 17. Via the inclined support surface 18a, the spring tension causes the drive piston 8 to be immediately driven back by the brake balls 17 in the ready-to-fire position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Beverage Vending Machines With Cups, And Gas Or Electricity Vending Machines (AREA)
  • Fertilizing (AREA)
  • Braking Arrangements (AREA)
  • Nozzles (AREA)
  • Confectionery (AREA)
EP89810360A 1988-06-10 1989-05-17 Pulverkraftbetriebenes Setzgerät Expired - Lifetime EP0346275B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89810360T ATE72160T1 (de) 1988-06-10 1989-05-17 Pulverkraftbetriebenes setzgeraet.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3819813A DE3819813A1 (de) 1988-06-10 1988-06-10 Pulverkraftbetriebenes setzgeraet
DE3819813 1988-06-10

Publications (2)

Publication Number Publication Date
EP0346275A1 EP0346275A1 (de) 1989-12-13
EP0346275B1 true EP0346275B1 (de) 1992-01-29

Family

ID=6356296

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89810360A Expired - Lifetime EP0346275B1 (de) 1988-06-10 1989-05-17 Pulverkraftbetriebenes Setzgerät

Country Status (8)

Country Link
US (1) US4941391A (ja)
EP (1) EP0346275B1 (ja)
JP (1) JP2582899B2 (ja)
KR (1) KR950014450B1 (ja)
AT (1) ATE72160T1 (ja)
AU (1) AU606526B2 (ja)
CA (1) CA1323466C (ja)
DE (2) DE3819813A1 (ja)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19627613C1 (de) * 1996-07-09 1997-12-11 Beto Tornado Gmbh Pulverkraftbetriebenes Bolzensetzgerät
DE10105885C1 (de) * 2001-02-09 2002-06-13 Hilti Ag Kolbenhalterung
DE10105882A1 (de) * 2001-02-09 2002-08-22 Hilti Ag Kolbenhalterung
DE10105884A1 (de) * 2001-02-09 2002-08-22 Hilti Ag Kolbenhalterung
DE10105886A1 (de) * 2001-02-09 2002-08-22 Hilti Ag Kolbenhalterung
DE10105879A1 (de) * 2001-02-09 2002-08-22 Hilti Ag Kolbenhalterung
DE10105881A1 (de) * 2001-02-09 2002-09-05 Hilti Ag Kolbenhalterung
DE10033498B4 (de) * 2000-07-10 2004-02-12 Kersten, Olaf, Dr. Pulverkraftbetriebenes Setzgerät

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2742375B1 (fr) 1995-12-13 1998-02-13 Spit Soc Prospect Inv Techn Appareil de scellement de tampons de fixation
DE19548870A1 (de) * 1995-12-27 1997-07-03 Hilti Ag Pulverkraftbetriebenes Setzgerät
DE19617672C1 (de) * 1996-05-03 1997-10-09 Beto Tornado Gmbh Pulverkraftbetriebenes Bolzensetzgerät
DE19617671C1 (de) * 1996-05-03 1997-10-09 Beto Tornado Gmbh Pulverkraftbetriebenes Bolzensetzgerät
DE19755730A1 (de) * 1997-12-15 1999-06-17 Hilti Ag Bolzensetzgerät
US6092710A (en) * 1998-06-09 2000-07-25 Berner Gmbh Explosive powder charge operated bolt-setting tool
US6059162A (en) * 1998-10-16 2000-05-09 Illinois Tool Works Inc. Exhaust baffle and spring assisted reset and dampener for powder actuated tool
FR2787149B1 (fr) * 1998-12-09 2001-01-05 Giat Ind Sa Dispositif de deverrouillage pyrotechnique
AU765697B2 (en) * 1998-12-14 2003-09-25 Illinois Tool Works Inc. Power actuated tools
AUPP770598A0 (en) * 1998-12-14 1999-01-14 Ramset Fasteners (Aust.) Pty. Limited Power actuated tools
AUPQ292499A0 (en) * 1999-09-17 1999-10-07 Cetram Pty Limited Power actuated tools
US7262778B1 (en) 2000-02-11 2007-08-28 Sony Corporation Automatic color adjustment of a template design
DE10105880C2 (de) * 2001-02-09 2003-04-10 Hilti Ag Kolbenhalterung
DE10105883C2 (de) * 2001-02-09 2002-12-05 Hilti Ag Kolbenhalterung
US6679411B2 (en) 2001-12-21 2004-01-20 Illinois Tool Works Inc. Piston retention system for a fastener driving tool
DE10254964B4 (de) * 2002-11-26 2014-02-13 Hilti Aktiengesellschaft Setzgerät
FR2848489B1 (fr) * 2002-12-11 2006-02-03 Prospection & Inventions Appareil de scellement a tir indirect
DE10358578A1 (de) * 2003-12-15 2005-07-14 Hilti Ag Brennkraftbetriebenes Setzgerät
DE10358576A1 (de) * 2003-12-15 2005-07-28 Hilti Ag Brennkraftbetriebenes Setzgerät
DE102007000135A1 (de) * 2007-03-08 2008-09-11 Hilti Ag Handwerkzeugmaschine mit pneumatischem Schlagwerk
CN201389838Y (zh) * 2009-03-27 2010-01-27 张汉勤 射钉发射装置
CN102039579B (zh) * 2010-09-03 2012-08-22 赵芬 自动连发拨弹机构
CN203092484U (zh) * 2013-02-22 2013-07-31 郭景辉 一种用于射钉枪的卸力装置
EP2923799A1 (de) * 2014-03-28 2015-09-30 HILTI Aktiengesellschaft Eintreibgerät
CN112264964B (zh) * 2020-09-29 2024-03-05 南京腾亚精工科技股份有限公司 一种射钉器击发装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA673276A (en) * 1963-10-29 C. Reynolds Harold Impact tool safety device
FR61848E (fr) * 1951-07-12 1955-05-18 Pistolet fixateur de scellements, rivets et tiges de raccordements
US3115636A (en) * 1961-08-11 1963-12-31 Olin Mathieson Explosive tools for driving studs
GB1100466A (en) * 1964-08-25 1968-01-24 Birmingham Small Arms Co Ltd Improvements in or relating to explosive actuated tools for driving nails, studs or other anchoring members into hard materials
US3915242A (en) * 1974-05-14 1975-10-28 Star Expansion Ind Corp Fastener driving power tool
US4064783A (en) * 1977-01-27 1977-12-27 The United States Of America As Represented By The Secretary Of The Navy Pressure-balanced underwater structural release system
FR2409826A1 (fr) * 1977-11-23 1979-06-22 Prospection & Inventions Appareil pour la pose d'elements de fixation, a chargement de l'arriere vers l'avant
DE3020286A1 (de) * 1980-05-28 1981-12-03 Hilti AG, 9494 Schaan Brennkraftbetriebenes setzgeraet
US4358041A (en) * 1980-06-12 1982-11-09 Olin Corporation Powder-actuated tool with power adjustment and angle-fire control
DE3151661A1 (de) * 1981-12-28 1983-07-07 Hilti AG, 9494 Schaan "setzgeraet mit von hochgespannten gasen treibbarem arbeitskolben"
DE3151658A1 (de) * 1981-12-28 1983-07-07 Hilti AG, 9494 Schaan "setzgeraet mit von hochgespannten gasen verschieblichem treibkolben"

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19627613C1 (de) * 1996-07-09 1997-12-11 Beto Tornado Gmbh Pulverkraftbetriebenes Bolzensetzgerät
DE10033498B4 (de) * 2000-07-10 2004-02-12 Kersten, Olaf, Dr. Pulverkraftbetriebenes Setzgerät
DE10105881A1 (de) * 2001-02-09 2002-09-05 Hilti Ag Kolbenhalterung
DE10105884A1 (de) * 2001-02-09 2002-08-22 Hilti Ag Kolbenhalterung
DE10105886A1 (de) * 2001-02-09 2002-08-22 Hilti Ag Kolbenhalterung
DE10105879A1 (de) * 2001-02-09 2002-08-22 Hilti Ag Kolbenhalterung
DE10105882A1 (de) * 2001-02-09 2002-08-22 Hilti Ag Kolbenhalterung
DE10105884C2 (de) * 2001-02-09 2002-12-05 Hilti Ag Kolbenhalterung
DE10105886C2 (de) * 2001-02-09 2002-12-05 Hilti Ag Kolbenhalterung
DE10105882C2 (de) * 2001-02-09 2002-12-05 Hilti Ag Kolbenhalterung
DE10105879C2 (de) * 2001-02-09 2002-12-12 Hilti Ag Kolbenhalterung
DE10105881B4 (de) * 2001-02-09 2004-01-15 Hilti Ag Kolbenhalterung
DE10105885C1 (de) * 2001-02-09 2002-06-13 Hilti Ag Kolbenhalterung

Also Published As

Publication number Publication date
EP0346275A1 (de) 1989-12-13
AU3605989A (en) 1989-12-14
JP2582899B2 (ja) 1997-02-19
KR950014450B1 (ko) 1995-11-28
KR900000168A (ko) 1990-01-30
CA1323466C (en) 1993-10-26
ATE72160T1 (de) 1992-02-15
JPH0224067A (ja) 1990-01-26
DE58900790D1 (de) 1992-03-12
US4941391A (en) 1990-07-17
DE3819813A1 (de) 1989-12-14
AU606526B2 (en) 1991-02-07

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