EP0235738A2 - Outil à main pour visser des écrous - Google Patents

Outil à main pour visser des écrous Download PDF

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Publication number
EP0235738A2
EP0235738A2 EP87102676A EP87102676A EP0235738A2 EP 0235738 A2 EP0235738 A2 EP 0235738A2 EP 87102676 A EP87102676 A EP 87102676A EP 87102676 A EP87102676 A EP 87102676A EP 0235738 A2 EP0235738 A2 EP 0235738A2
Authority
EP
European Patent Office
Prior art keywords
piston
screw
hand tool
rotary
tool according
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.)
Granted
Application number
EP87102676A
Other languages
German (de)
English (en)
Other versions
EP0235738B1 (fr
EP0235738A3 (en
Inventor
Willy Kress
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT87102676T priority Critical patent/ATE64709T1/de
Publication of EP0235738A2 publication Critical patent/EP0235738A2/fr
Publication of EP0235738A3 publication Critical patent/EP0235738A3/de
Application granted granted Critical
Publication of EP0235738B1 publication Critical patent/EP0235738B1/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
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/02—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket
    • B25B21/023—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket for imparting an axial impact, e.g. for self-tapping screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/0085—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for explosive-powered

Definitions

  • the invention relates to a hand-held device according to the type of the main claim.
  • Handheld devices of this type usually referred to as screwdrivers
  • screwdrivers are known in various forms; in the simplest case, they can be mains-dependent hand drills that have means for switching from right to left and, if possible, also to change the speed of the driving electric motor by correspondingly pressing the on / off switch. It is also known to operate such screwdrivers on the basis of rechargeable batteries, which then supply a DC motor which is reversible in its direction of rotation with the required supply voltage and are usually contained in a so-called battery pack for recharging, which can be inserted with the handheld device by insertion and simultaneous manufacture of the electrical connection terminals can be connected.
  • Such a device can be used in uninterrupted continuous operation, only the cartridge magazines for the loads, which are automatically moved by the device in the handle so that a fresh load is available for each shot, must be replaced and in each case from the beginning the device must use a suitably trained nail. It goes without saying that such a device, since it is based on a certain degree of handling hazard, can only be triggered if a special trigger safety device has been overcome, which can consist, for example, of a pressure safety device that is designed such that the ignition, for example via a mechanical locking mechanism, can only take place when a given pressing force has been pressed onto an object to be nailed and a certain pressing path has also been overcome.
  • a special trigger safety device can consist, for example, of a pressure safety device that is designed such that the ignition, for example via a mechanical locking mechanism, can only take place when a given pressing force has been pressed onto an object to be nailed and a certain pressing path has also been overcome.
  • the invention has for its object to improve the above-mentioned handheld device for screwing in screws so that it is possible to set screws using the basic principle of the nailing device by triggering charges, with the continuous dynamic work and the fast process Obstacles when screwing in, which occur more frequently and which otherwise occur, for example, when the driving connection between the screw head and the respective driving bit ratchets through, can be easily overcome.
  • the hand-held device according to the invention solves this problem with the characterizing features of the main claim and has the advantage that all the disadvantages that the Known mains-operated or cordless screwdrivers inherent, namely dependency on the network or exhaustion of the batteries, and also a certain cumbersome operation in each case at the beginning of a screwing process.
  • the handheld device according to the invention is completely independent of the power supply and can be operated indefinitely by replacing cartridges contained in corresponding disposable magazine strips, with the advantage that screwing in screws or the strong dynamic force that occurs when triggered and the force generated thereby appropriate, screw-like fasteners without pre-drilling or without pre-marking is possible.
  • the hand-held device according to the invention also exerts an axial thrust effect, namely of considerable force and strength, which is supported by the moment of inertia of the usually medium-weight device.
  • an axial thrust effect namely of considerable force and strength, which is supported by the moment of inertia of the usually medium-weight device.
  • this axial thrust there is strong rotary driving, so that even longer screws can be easily screwed into complicated materials.
  • the screwing-in process takes place in fractions of a second.
  • the device in the area of the receptacle for the respective screw that is to say in the area of the driving bit itself, endeavors to maintain the connection here, that is to say not to slip through, because of the effect just explained, namely that the receiving bit itself performs an axial movement, which of course , since the screw has to absorb the pressure resulting from this axial movement, leads to a firm engagement between, for example, the cross recess of the screw head and the driving bit.
  • the whole screwing-in process is so fast that the dynamic entrainment and the force of the screwing-in process ensure a work process with considerable strength, but which runs smoothly and smoothly, without it being developed by the screw when screwing it in for a short period Counter torque could come to a loosening of the slewing ring and ratcheting.
  • both the screwing speed and the screwing depth can be changed in any way, and with reference to the screwing speed by changing the pressure exerted on a screw piston, which is possible by changing the caliber of the magazine cartridges to be used and changing the screwing depth by adjusting the thread length and / or steepness for the screw piston, which can be done without difficulty by changing the front inserts is possible.
  • the hand-held device according to the invention is also able to process particularly large screws which are to be screwed into very hard materials and is also a preferred area of application here, so that it can be used, for example it is conceivable to insert screws with very deep threads directly into materials that were previously not suitable for a screwing process, at least without dowels, such as concrete or brick walls and the like; if, for example, you only want to avoid nailing, because nails lack the special claw effect of screws in the respective material and could therefore be pulled out of the material by a long-lasting, axial pulling action.
  • the drawing shows a side view of the hand-held device according to the invention for screwing in screws, with a partial sectional view of certain components, overall highly schematized.
  • the basic idea of the present invention is to create a hand-held device for screwing in screws or similar fasteners on the basis of and using the known shooting system of a nailing device, as explained further above, at least one first being only axially in a guide moving pressure piston and a second driven by this, simultaneously and positively guided axially and a rotationally performing screw piston is provided, which is responsible for screwing in the suitably arranged screw arranged at its front end by its combined movement.
  • the embodiment shown in the drawing of such a handheld device 10 for screwing in screws or the like which can also be referred to as a so-called shooting screwdriver, comprises a handle area 10a and the bearing and guide mechanism for the various piston and cylinder units, which in the Running area 10b of the handheld device 10 is arranged.
  • the explosion pressure comes into effect in a chamber 15, which is limited on at least one side by a first piston 16, which is arranged in a corresponding piston guide 17 so as to be slidable.
  • the piston guide 17 can be a cylindrical tube which is mounted in a suitable manner in the housing 18 of the hand-held device.
  • the pressure energy absorbed by the at least one or first piston 16 and acting axially in the direction of the guide or bearing tube 17 leads to a rapid axial movement of this first piston 16 to the left in the plane of the drawing, in which case a first exemplary embodiment can be constructed such that A piston rod-like extension, not shown in the drawing, is attached directly to this piston 16, which acts on a further piston 19 and also tries to axially displace it.
  • the thread toothing 20 can be designed such that an internal thread 22, for example a trapezoidal thread, is arranged in the interior of the guide tube 21 for the rotary piston 19, as will be referred to below, which meshes with a corresponding external thread 23 on the rotary piston 19.
  • this thread is designed so that the axial pressure action of the piston or pistons 16, 16a causes a direct rotary movement of the rotary piston 19, which is positively guided by the two interlocking threads 22 and 23, the axial displacement of the rotary piston 19 and causes its simultaneous rotary movement.
  • the pressure action from the intermediate piston 16a on the rotary piston can take place via a tappet 24 with a small diameter, so that the frictional influences between the only axially moving piston 16 or intermediate piston 16a and the rotating piston 19 moving at the same axial speed, but rotating at the same time are reduced.
  • the guide tube 21 with the rotary piston 19 mounted by it can be made as long as is normally required for screwing in special screws, so that a corresponding number of threads of the thread 20 are accommodated and therefore also ensured that a respective screw can be fully screwed into the material or object 25 to which it is attached by a single ignition.
  • the respectively predeterminable length of the guide tube 21 with its internal thread 22 is indicated by the interruption point at 26. It is advantageous here to design the front region, comprising the guide tube and, if applicable, rotary piston 19, with different sizes and shapes as interchangeable components (interchangeable); with any attachment to the barrel part 10b, for example by a bayonet lock.
  • a locking lock which is shown at 27 and which consists, for example, of a locking ball 28 , which is pressed by a bias spring 29 into the path of the intermediate piston 16a through a corresponding passage opening in the guide space 17. If a corresponding pressure is exerted on the intermediate piston 16a, the latter can easily push the ball 28 away and the screwing process begins.
  • a screw magazine 30 in the front opening area, which is only indicated schematically and through which new screws 31 are fed in each case, for example by a suitable manually operated adjusting mechanism, which then always brings the next screw into the area of the rotary piston 19 provided receptacle for the screw.
  • this receptacle can only be formed by a rod-shaped extension 32 connected to the rotary piston 19, which has a conventional screwdriver cross-head configuration at its front end and therefore engage in the corresponding cross-head screw head of the screw 31 to be screwed in can, for example, also additionally have a magnetic holding effect on them, as is known per se.
  • the working components are shown in the plane of the drawing on the right to the point of interruption 26 in the starting position from which they are, namely the pistons 16, 16a and the rotary piston 19 are then moved suddenly and then smoothed out when the respective charge 13 is released in the plane of the drawing to the left.
  • a screwing-in process that has already been carried out in part is shown, the rotary piston 19 or the like being attached to a by a suitable compression spring.
  • formed resilient stop 32 can open, whereby at the end of the screw-in movement, the dynamics of the rotary movement and the impact force are braked and the screw is not over-tightened.
  • a front stop plate 34 can be provided which, acting as a screw depth stop, cancels the screwing process when the handheld device lies fully against the counter surface of the material 25; but it is also possible to begin the screwing process in such a way that when the rotary piston 19 is retracted into the device, the stop surface 34 abuts the counter surface of the material 25 from the start and the screwing process is carried out with the screw hidden until it is in the material is screwed in, which can be easily achieved by suitable stops for the rotary piston 19.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Dowels (AREA)
EP87102676A 1986-03-04 1987-02-25 Outil à main pour visser des écrous Expired - Lifetime EP0235738B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87102676T ATE64709T1 (de) 1986-03-04 1987-02-25 Handgeraet zum einschrauben von schrauben.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3606927 1986-03-04
DE19863606927 DE3606927A1 (de) 1986-03-04 1986-03-04 Handgeraet zum einschrauben von schrauben

Publications (3)

Publication Number Publication Date
EP0235738A2 true EP0235738A2 (fr) 1987-09-09
EP0235738A3 EP0235738A3 (en) 1989-04-26
EP0235738B1 EP0235738B1 (fr) 1991-06-26

Family

ID=6295396

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87102676A Expired - Lifetime EP0235738B1 (fr) 1986-03-04 1987-02-25 Outil à main pour visser des écrous

Country Status (4)

Country Link
US (1) US4793226A (fr)
EP (1) EP0235738B1 (fr)
AT (1) ATE64709T1 (fr)
DE (2) DE3606927A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0350370A1 (fr) * 1988-07-05 1990-01-10 SOCIETE INDUSTRIELLE DE MECANIQUE ET D'AUTOMATION DU FAUCIGNY dite S.I.M.A.F.(Société Anonyme) Appareil automatique de pose d'inserts notamment du type douille
WO1998057780A1 (fr) * 1997-06-18 1998-12-23 Compytec Technologies Devisseuse-visseuse pyrotechnique

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3802018A1 (de) * 1988-01-25 1989-08-03 Vielberth Inst Entw & Forsch Druckgasbetriebenes bearbeitungsgeraet
JP2594079Y2 (ja) * 1993-02-17 1999-04-19 マックス株式会社 ネジの打ち込みねじ込み装置
DE4334940C2 (de) * 1992-10-15 1996-10-31 Max Co Ltd Schlagschraubvorrichtung
US7134367B2 (en) 2002-12-09 2006-11-14 Milwaukee Electric Tool Corporation Fastener feeding system
US6880252B1 (en) 2003-03-11 2005-04-19 Theodore P. Drake Hand tool for defining a starting location for an element to be driven into a substrate
US7552781B2 (en) 2004-10-20 2009-06-30 Black & Decker Inc. Power tool anti-kickback system with rotational rate sensor
US8371192B2 (en) * 2008-04-10 2013-02-12 Chihching Hsieh Impact driver
JP5590505B2 (ja) * 2009-09-30 2014-09-17 日立工機株式会社 打込機
AU2011204260A1 (en) * 2010-01-07 2012-06-07 Black & Decker Inc. Power screwdriver having rotary input control
US9266178B2 (en) 2010-01-07 2016-02-23 Black & Decker Inc. Power tool having rotary input control
US9475180B2 (en) 2010-01-07 2016-10-25 Black & Decker Inc. Power tool having rotary input control
US8418778B2 (en) 2010-01-07 2013-04-16 Black & Decker Inc. Power screwdriver having rotary input control
EP2631035B1 (fr) 2012-02-24 2019-10-16 Black & Decker Inc. Outil électrique
US10589413B2 (en) 2016-06-20 2020-03-17 Black & Decker Inc. Power tool with anti-kickback control system
CN111168613A (zh) * 2020-01-17 2020-05-19 中国航发贵州航空发动机维修有限责任公司 一种航空发动机沉头螺钉分解专用解刀

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1364296A (en) * 1919-02-10 1921-01-04 Alva F Mullan Nut-turning machine
US1555655A (en) * 1923-11-01 1925-09-29 Bryant Service Inc Explosive marking device
US2448995A (en) * 1944-08-09 1948-09-07 Jesse C Mccorkhill Impact screw driver
US3129619A (en) * 1961-02-03 1964-04-21 Robert A Harrison Explosively activated bolt-holding wrench
FR1582954A (fr) * 1968-08-27 1969-10-10
DE1478914A1 (de) * 1964-07-08 1969-11-20 Gkn Screws Fasteners Ltd Werkzeug zum Einbringen selbstlochender und selbstgewindeherstellender Schrauben in ein Werkzeug
US3584695A (en) * 1969-02-18 1971-06-15 Gkn Screws Fasteners Ltd Power tools
US3603406A (en) * 1969-09-25 1971-09-07 Gkn Screws Fasteners Ltd Explosive operated power tool with impact and rotation
US3912022A (en) * 1974-05-20 1975-10-14 Sun Oil Co Pennsylvania Portable power impact wrench
US3990407A (en) * 1975-08-18 1976-11-09 Parker James T Explosively powered rotary tool
US4370906A (en) * 1980-05-05 1983-02-01 Resonant Technology Company Sequenced fastener installation system
US4428261A (en) * 1981-02-23 1984-01-31 Nisco Inc. Screw feed apparatus for use with a power screwdriving tool
DE3518517A1 (de) * 1985-05-23 1986-11-27 Hilti Ag, Schaan Antriebseinrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT178075B (de) * 1952-08-21 1954-04-10 Langensiepen Kg M Vorrichtung zum Eintreiben von Bolzen u. dgl.
GB780338A (en) * 1953-11-04 1957-07-31 California Research Corp Para-xylene production
US3045242A (en) * 1959-12-17 1962-07-24 Adolph John Lester Explosive power activated mechanisms
US3930297A (en) * 1973-11-05 1976-01-06 Duo-Fast Corporation Fastener feed apparatus and method

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1364296A (en) * 1919-02-10 1921-01-04 Alva F Mullan Nut-turning machine
US1555655A (en) * 1923-11-01 1925-09-29 Bryant Service Inc Explosive marking device
US2448995A (en) * 1944-08-09 1948-09-07 Jesse C Mccorkhill Impact screw driver
US3129619A (en) * 1961-02-03 1964-04-21 Robert A Harrison Explosively activated bolt-holding wrench
DE1478914A1 (de) * 1964-07-08 1969-11-20 Gkn Screws Fasteners Ltd Werkzeug zum Einbringen selbstlochender und selbstgewindeherstellender Schrauben in ein Werkzeug
FR1582954A (fr) * 1968-08-27 1969-10-10
US3584695A (en) * 1969-02-18 1971-06-15 Gkn Screws Fasteners Ltd Power tools
US3603406A (en) * 1969-09-25 1971-09-07 Gkn Screws Fasteners Ltd Explosive operated power tool with impact and rotation
US3912022A (en) * 1974-05-20 1975-10-14 Sun Oil Co Pennsylvania Portable power impact wrench
US3990407A (en) * 1975-08-18 1976-11-09 Parker James T Explosively powered rotary tool
US4370906A (en) * 1980-05-05 1983-02-01 Resonant Technology Company Sequenced fastener installation system
US4428261A (en) * 1981-02-23 1984-01-31 Nisco Inc. Screw feed apparatus for use with a power screwdriving tool
DE3518517A1 (de) * 1985-05-23 1986-11-27 Hilti Ag, Schaan Antriebseinrichtung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0350370A1 (fr) * 1988-07-05 1990-01-10 SOCIETE INDUSTRIELLE DE MECANIQUE ET D'AUTOMATION DU FAUCIGNY dite S.I.M.A.F.(Société Anonyme) Appareil automatique de pose d'inserts notamment du type douille
WO1998057780A1 (fr) * 1997-06-18 1998-12-23 Compytec Technologies Devisseuse-visseuse pyrotechnique
FR2764836A1 (fr) * 1997-06-18 1998-12-24 Bernard Castagner Devisseuse-visseuse pyrotechnique

Also Published As

Publication number Publication date
ATE64709T1 (de) 1991-07-15
DE3770954D1 (de) 1991-08-01
EP0235738B1 (fr) 1991-06-26
EP0235738A3 (en) 1989-04-26
DE3606927C2 (fr) 1991-03-28
DE3606927A1 (de) 1987-09-10
US4793226A (en) 1988-12-27

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