EP0191186A2 - Outil d'enfoncement actionné par un fluide comprimé - Google Patents

Outil d'enfoncement actionné par un fluide comprimé Download PDF

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Publication number
EP0191186A2
EP0191186A2 EP85115954A EP85115954A EP0191186A2 EP 0191186 A2 EP0191186 A2 EP 0191186A2 EP 85115954 A EP85115954 A EP 85115954A EP 85115954 A EP85115954 A EP 85115954A EP 0191186 A2 EP0191186 A2 EP 0191186A2
Authority
EP
European Patent Office
Prior art keywords
impact device
impact
pressure medium
handle
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.)
Withdrawn
Application number
EP85115954A
Other languages
German (de)
English (en)
Other versions
EP0191186A3 (fr
Inventor
Frank Müller
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0191186A2 publication Critical patent/EP0191186A2/fr
Publication of EP0191186A3 publication Critical patent/EP0191186A3/fr
Withdrawn legal-status Critical Current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
    • B25C1/04—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure

Definitions

  • the invention relates to a pressure medium-operated impact device according to the preamble of the main claim.
  • Such an impact device has already become known from DE-OS 22 50 475, in which, however, there is a dependence on a compressed air line network.
  • the connection line for the compressed air also hinders the handling of the impact device. Due to the existing valve control, the impact strength cannot be varied. Only the length of the work cycles can be influenced by changing the trigger path of the trigger handle.
  • the pressure in a compressed air line network required here is relatively low in order to keep leakage losses as low as possible. This limits the achievable impact strength. Powerful striking devices must be relatively large and heavy, because the impact can only be increased by increasing the piston area.
  • the impact device according to the invention with the characterizing features of the main claim has the advantage that it can work independently of a compressed air line network and undisturbed by a compressed air line.
  • the pressure medium accumulator on the impact device results in a hitherto unknown versatility of the impact device in use, and when using high-pressure accumulators, an unprecedented impact force with small device dimensions. Operation is energy-saving because there are practically no leakage losses.
  • FIG. 1 shows a longitudinal section through an impact device according to the invention which is ready to strike
  • FIG. 2 shows a longitudinal section like FIG. 1, during the impact
  • FIG. 3 shows a longitudinal section like FIG. 1 after the impact, shortly before lifting off the workpiece
  • FIG. 4 shows a side view the impact device with the means for mechanically returning the piston to its ready position
  • FIG Section 5-5 of Figure 4 Figure 6 is a plan view of Figure 4, partially in section, at the beginning of the piston return
  • Figure 7 is a plan view like Figure 6 at the end of the piston return.
  • a striking device 1 is essentially composed of four main parts. These are, an upper housing part 2, a pressure medium guide body 3, a handle 4 and a C0 2 cartridge 5.
  • the upper housing part contains a working cylinder 6, in which a piston 7 is guided.
  • a striking knife 8 is connected to the piston 7 and this connection is secured by means of a pin 9.
  • an O-ring 10 is inserted into this working cylinder.
  • the striking knife 8 is also guided in a channel 11/12, which is formed (11) by the upper housing part and the other (12) by a guide part (13).
  • the guide part 13 is part of a clip magazine 14 which is inserted into a corresponding recess in the upper housing part 2.
  • a threaded bore 15 can receive a screw 16 which has a pin 17 and is fixedly connected to a knurled ring 18.
  • the knurled ring 18 lies in an incision 19 in the upper housing part 2.
  • the pin 17 protrudes into a cylindrical bore 20 which is aligned with the threaded bore 15 in the upper housing part 2.
  • the pin 17 can receive one end of a helical spring 21, the other end of which engages in a bore 22 of an impact body 23.
  • This impact body 23 is guided in the cylindrical bore 20.
  • the end face of the impact body 23 ′ facing away from the helical spring 21 is flat.
  • the end of the firing pin 24 facing the striking body 23 has a collar.
  • the end of the firing pin 24 opposite this collar is rounded and contrasted with a valve pin 26.
  • the valve pin 26 is part of a valve arrangement in a threaded pin 27 of the C0 2 cartridge.
  • the further individual parts of this valve arrangement are inserted into a bore 28 in the threaded pin 27.
  • the sealing of the threaded pin 27 against the pressure medium guide body 3 is done via a Sealing disc 36.
  • a bore in the carrier disc 35 is so large that pressure medium can pass through it, although it surrounds a pin of the valve pin 26.
  • the valve pin 26 is provided with a collar 37 which can be placed on the sealing ring 34 or lifted off from it.
  • the C0 2 cartridge 5 serving as a pressure medium store can be closed or opened.
  • a pressure medium guide channel 38 in the pressure medium guide body 3 is in passage connection with the bore in the carrier disk 35 and the working cylinder 6. Through it, pressure medium can get from the pressure medium storage 5 into the working cylinder 6.
  • the wall of the cylindrical bore 20 facing the handle 4 has a slot 39 through which a lug 40 of a double lever 41 can engage in the cylinder bore 20. This nose 40 can lie in front of the end face of the striking body 23 which faces the striking pin 24.
  • the double lever 41 always tries to assume this engagement position for the nose 40 under the action of a compression spring 42.
  • the double lever 41 is supported on a pin 43 in a recess 44 of the handle 4.
  • the end of the double lever 41 facing away from the nose 40 has an inclined surface 45 which can lie in front of an inclined surface 46 of a release handle 47.
  • the trigger handle 47 is also pivotally mounted about a pin 48 in the recess 44 of the handle 4. It is placed under the action of a spring 49 which is supported on the one hand in a bore 50 in the handle 4 and on the other hand in a bore 51 of the trigger handle 47.
  • the upper housing part 2 Near the knurled ring 18, the upper housing part 2 has a downward projection 52. This is opposite a projection 53 of the handle 4.
  • Both projections 52 and 53 have mutually opposite blind holes into which a helical compression spring 54 is inserted.
  • the upper housing part 2 and the pressure medium guide body 3 are preferably glued together. You can of course also be connected to each other by screws or the like.
  • the connection between the upper housing part 2 with the pressure medium guide body 3 and the handle 4 is established by two guide rods 55.
  • the guide rods 55 are pressed into bores in the pressure medium guide body 3. They can slide in bores in the handle 4.
  • a bearing block 56 on the side on the pressure medium guide body 3 and 57 on the side on the upper housing part 2 take up two guide pins 58 on which a slide 59 can be moved along the working cylinder 6 is led.
  • the carriage 59 carries a pawl 60 pivotable about a pin 61 and with a nose 62.
  • the nose 62 can pass through a slot 63 in the wall of the working cylinder 6, which at the same time serves as a relief opening for the pressure medium which previously drove the piston 7.
  • the nose 62 can engage through the slot 63 in a groove 64 in the piston 7.
  • the nose 62 also has an inclined surface 65, the task of which later will be described later.
  • the pawl 60 is placed under the action of a compression spring 66, which is guided in a bore in the pawl 60 and always tries to move this pawl 60 into the working cylinder 6.
  • Another task is an inclined edge 67 of the pawl 60. It is assigned a nose 68 on the upper housing part 2.
  • the underside of the carriage 59 is designed as a toothed rack 69, a toothed wheel 70 engages in this toothed rack 61 and is mounted in the upper housing part 2 by means of a bolt 71.
  • a large gear 72 meshes with this gear 70, which forms a double gear with a small gear 73 and is likewise mounted on a bolt 74 on the upper housing part 2.
  • a toothed segment, 75 a rocker 76 meshes with the small gear 73.
  • the rocker 76 is supported on a tab 77 of the upper housing part 2 with a bolt 78.
  • the rocker arm 76 has an elongated hole 79 in its lever arm facing away from the toothed segment 75.
  • This elongated hole 79 engages a pin 80 which is attached to a bracket 81.
  • the support bracket 81 in turn is screwed into a recess in the handle 4 by means of a screw 82.
  • the brackets to be hammered in are designated 83. One of them is shown in different positions in FIGS. 1 to 3.
  • FIGS. 6 and 7 The sequence of movements for the detection and return of the piston 7 by means of the pawl 60 is particularly illustrated in FIGS. 6 and 7.
  • the nose 68 has pivoted the pawl 60 so far against its compression spring 66 that the nose 62 of the pawl 60 has come out of engagement with the groove 64 in the piston 7.
  • the piston 7 can thus be driven forward unhindered after the striking means of the trigger handle 47 has been triggered.
  • the handle 4 is returned to its starting position by the force of the springs 21 and 54. It causes the rocker 76 to pivot counterclockwise.
  • the slide 59 is moved in the direction of the workpiece 84 via the gear transmission 69 to 75.
  • the nose 62 of the pawl 60 is immersed in the working cylinder 6 again by the pawl 60 running off the nose 68. Thereafter, the pawl 60 is pressed with its nose 62 outwards again by the inclined surface 65 running against the rear edge of the piston 7 and runs along the jacket of the piston 7 until it can snap into the groove 64 in this piston 7 again.
  • the driving connection for returning the piston 7 when the impact device 1 is pressed onto the workpiece 84 is thus restored.
  • the guide pins 58 ensure that the carriage 59 is guided properly.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Percussive Tools And Related Accessories (AREA)
EP85115954A 1985-01-30 1985-12-13 Outil d'enfoncement actionné par un fluide comprimé Withdrawn EP0191186A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853502977 DE3502977A1 (de) 1985-01-30 1985-01-30 Druckmittelbetriebenes schlaggeraet
DE3502977 1985-01-30

Publications (2)

Publication Number Publication Date
EP0191186A2 true EP0191186A2 (fr) 1986-08-20
EP0191186A3 EP0191186A3 (fr) 1987-06-16

Family

ID=6261090

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85115954A Withdrawn EP0191186A3 (fr) 1985-01-30 1985-12-13 Outil d'enfoncement actionné par un fluide comprimé

Country Status (4)

Country Link
US (1) US4688645A (fr)
EP (1) EP0191186A3 (fr)
JP (1) JPS61178187A (fr)
DE (1) DE3502977A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2628020A1 (fr) * 1988-02-09 1989-09-08 Max Co Ltd
WO2003002308A1 (fr) * 2001-06-28 2003-01-09 Prebena Wilfried Bornemann Dispositif d'expulsion actionne par un agent de pression
EP1325796A3 (fr) * 2002-01-04 2003-08-13 Illinois Tool Works, Inc. Outil d'enfoncement d'éléments de fixation avec une source de pression
US7845532B2 (en) 2006-11-09 2010-12-07 Stanley Fastening Systems, L.P. Cordless fastener driving device

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3728454C2 (de) * 1987-08-26 1993-12-23 Bosch Gmbh Robert Druckmittelbetriebenes Schlaggerät
DE3730048A1 (de) * 1987-09-08 1989-03-16 Bosch Gmbh Robert Handwerkzeugmaschine
DE3730049C2 (de) * 1987-09-08 1998-07-09 Bosch Gmbh Robert Schlaggerät
AU681770B2 (en) * 1994-05-18 1997-09-04 Stanley-Bostitch, Inc. Adjustable energy control valve for a fastener driving device
US6158643A (en) * 1997-12-31 2000-12-12 Porter-Cable Corporation Internal combustion fastener driving tool piston and piston ring
US6041603A (en) * 1997-12-31 2000-03-28 Porter-Cable Corporation Internal combustion fastener driving tool accelerator plate
USD410182S (en) 1997-12-31 1999-05-25 Porter-Cable Corporation Internal combustion fastener driving tool
US6260519B1 (en) * 1997-12-31 2001-07-17 Porter-Cable Corporation Internal combustion fastener driving tool accelerator plate
US6016946A (en) * 1997-12-31 2000-01-25 Porter-Cable Corporation Internal combustion fastener driving tool shuttle valve
US6045024A (en) * 1997-12-31 2000-04-04 Porter-Cable Corporation Internal combustion fastener driving tool intake reed valve
US6006704A (en) * 1997-12-31 1999-12-28 Porter-Cable Corporation Internal combustion fastener driving tool fuel metering system
JP4501253B2 (ja) * 2000-08-18 2010-07-14 マックス株式会社 空気圧工具による釘打ちシステム
CA2465699C (fr) * 2001-11-02 2008-01-22 Poly Systems Pty Ltd Pistolet a clouer utilisant un gaz propulseur liquefie
CN100445043C (zh) * 2002-01-04 2008-12-24 伊利诺斯器械工程公司 带压缩动力源的紧固件驱动工具
BR0301036B1 (pt) * 2003-04-29 2013-09-10 propante para fraturamento hidráulico de poços de petróleo ou de gás, bem como método para reduzir ou eliminar o fenômeno de reversão de fluxo em poços de petróleo ou de gás
US8875969B2 (en) * 2007-02-09 2014-11-04 Tricord Solutions, Inc. Fastener driving apparatus
DE102007000391A1 (de) * 2007-07-19 2009-01-22 Hilti Aktiengesellschaft Handwerkzeugmaschine mit Schlagwerk
US20090302087A1 (en) * 2008-06-06 2009-12-10 Chia-Sheng Liang Adjusting Mechanism for Control Valve of Nail Guns
EP2367662A1 (fr) 2008-12-24 2011-09-28 Globalforce Ip Limited Système de vaporisation
DE102010061942A1 (de) * 2010-11-25 2012-05-31 Hilti Aktiengesellschaft Eintreibgerät
US9777725B2 (en) * 2014-07-24 2017-10-03 Taizhou Dajiang Ind. Co., Ltd. High pressure water pump
US9724811B2 (en) * 2014-07-24 2017-08-08 Taizhou Dajiang Ind. Co., Ltd. Steam powered nailing gun
US20160023336A1 (en) * 2014-07-24 2016-01-28 Taizhou Dajiang Ind. Co., Ltd. Phase transition heat storage device

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2867086A (en) * 1954-12-20 1959-01-06 Emmett L Haley Portable pressure fluid power devices
US2919678A (en) * 1957-08-13 1960-01-05 Fairmont Railway Motors Inc Hydraulic driving apparatus
US3049712A (en) * 1961-04-07 1962-08-21 Joseph A Khan Gas operated stapler
US3250334A (en) * 1963-08-13 1966-05-10 Sussman Ernst Impact tools
US3362602A (en) * 1966-02-28 1968-01-09 Powernails Inc Nailing machine
US3638534A (en) * 1969-08-18 1972-02-01 Fastener Corp Fastener driving tool with improved pneumatic piston retaining means
US3643851A (en) * 1969-08-25 1972-02-22 United States Surgical Corp Skin stapler
US3603406A (en) * 1969-09-25 1971-09-07 Gkn Screws Fasteners Ltd Explosive operated power tool with impact and rotation
DE2250475C3 (de) * 1972-10-14 1975-08-07 Erwin Mueller Kg Metallwarenfabrik, 4450 Lingen Steuerventileinrichtung für den doppelt wirkenden Arbeitszylinder eines mit Druckluft betriebenen Schlaggeräts
US3948051A (en) * 1974-08-01 1976-04-06 Marshall Don J Fluid pressure amplifier
US4211352A (en) * 1979-02-26 1980-07-08 Zilka Thomas J Nailing machine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2628020A1 (fr) * 1988-02-09 1989-09-08 Max Co Ltd
WO2003002308A1 (fr) * 2001-06-28 2003-01-09 Prebena Wilfried Bornemann Dispositif d'expulsion actionne par un agent de pression
US6845896B2 (en) 2001-06-28 2005-01-25 Prebena Wilfried Bornemann Gmbh & Co. Kg Expulsion device actuated by a pressure medium
EP1325796A3 (fr) * 2002-01-04 2003-08-13 Illinois Tool Works, Inc. Outil d'enfoncement d'éléments de fixation avec une source de pression
US6786379B2 (en) 2002-01-04 2004-09-07 Ilinois Tool Works Inc. Fastener driving tool having pressurized power source
AU2002323718B2 (en) * 2002-01-04 2005-12-15 Illinois Tool Works Inc. Fastener driving tool having pressurized power source
US7845532B2 (en) 2006-11-09 2010-12-07 Stanley Fastening Systems, L.P. Cordless fastener driving device

Also Published As

Publication number Publication date
JPS61178187A (ja) 1986-08-09
EP0191186A3 (fr) 1987-06-16
US4688645A (en) 1987-08-25
DE3502977A1 (de) 1986-07-31

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Inventor name: MUELLER, FRANK