EP0976501A2 - Clé à choc avec mécanisme de choc débrayable - Google Patents

Clé à choc avec mécanisme de choc débrayable Download PDF

Info

Publication number
EP0976501A2
EP0976501A2 EP98120362A EP98120362A EP0976501A2 EP 0976501 A2 EP0976501 A2 EP 0976501A2 EP 98120362 A EP98120362 A EP 98120362A EP 98120362 A EP98120362 A EP 98120362A EP 0976501 A2 EP0976501 A2 EP 0976501A2
Authority
EP
European Patent Office
Prior art keywords
control sleeve
cam control
ball
impact wrench
impact
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Withdrawn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
EP98120362A
Other languages
German (de)
English (en)
Other versions
EP0976501A3 (fr
Inventor
Yiannis Georgiou
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.)
Rodcraft Pneumatic Tools GmbH
Original Assignee
Rodcraft Pneumatic Tools 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 Rodcraft Pneumatic Tools GmbH filed Critical Rodcraft Pneumatic Tools GmbH
Publication of EP0976501A2 publication Critical patent/EP0976501A2/fr
Publication of EP0976501A3 publication Critical patent/EP0976501A3/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • B25B21/026—Impact clutches
    • 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

Definitions

  • the invention relates to an impact wrench device with a motor that has a Shaft transmits a rotary motion to a screw spindle and one of a cam control sleeve surrounded by an impact mechanism cage for controlling the impact movement drives, where on the head side facing away from the screw spindle
  • Cam control sleeve is a web arranged over its circumference, which is in the axial direction has an elevation, whereby the cam control sleeve in interaction with the striking mechanism cage opposite, a channel for the circulation of a ball is arranged and wherein the cam control sleeve in axially displaceable pins engages the one by a sliding movement exerting the striking mechanism compress the spring ensuring the return to the initial state.
  • Impact wrenches are used as tools for tightening and Loosening screws. They are in particular to minimize the time and effort required become indispensable in numerous technical fields. Compared to conventional ones pneumatic or electric screwdrivers have impact wrenches the advantage of the fact that, in addition to high torques, they also cause axial strikes are executable. Three types of percussion have prevailed, namely the striking mechanism, the hammer mechanism and the claw mechanism.
  • the object of the invention is therefore to create a screwdriver device, that prevents the creation of uncontrolled high torques and is gentle on the material is by overtightening the screws and related destruction excludes.
  • the device should be significantly more reliable and safe than previously possible work and prevent unnecessary noise pollution. With the new device to Loosening screws significantly higher torques can be applied than to their tightening.
  • cam control sleeve during the tightening movement the screw allows the ball to lock and thus allows it to rotate the striking mechanism is designed to block and in the releasing movement the screw allows the ball to run around on the track or in the channel and thus producing the striking mechanism while rotating is trained.
  • the impact wrench device thus offers the advantage that the striking mechanism is blocked when the screw is tightened, i.e. when turning clockwise and only the rotating mechanism works.
  • the impact wrench device brings only a predetermined torque. This is usually less than that Torque with which the screw is ultimately to be fastened.
  • Torque with which the screw is ultimately to be fastened.
  • the remaining torque is from the operator mechanically, for example by using an appropriate torque wrench to apply. This will damage and destroy the Avoid rim or the screws.
  • cam control sleeve the impact mechanism of the screwdriver.
  • both rotating and striking mechanisms work.
  • the power transmission between cam control sleeve and striking mechanism cage works as with conventional impact wrench devices without any disadvantages compared to that prior art known to date.
  • the single-running turning mechanism when tightening and combined turning / striking mechanism when the screw is loosened that the cam control sleeve has at least one elevation on its head side, causing the web to rise flat and even on one side and the other Side abruptly falling and thus interrupting the course of the path, whereby the contact between ball and track is brief, with the striking mechanism accompanying, interrupted. Because of this fundamentally different training The path on both sides of the elevation is thus reached that the ball blocked when tightening the screw, d. H. jammed, and when loosening the screw is moved over a flank which ensures constant running of the ball.
  • This arrangement of the track causes the impact wrench to run counterclockwise the cam control sleeve strikes in the direction of the screw spindle and thus the desired striking movement generated.
  • the invention provides that the bulge in terms of shape the ball corresponds.
  • the bulge in terms of shape the ball corresponds.
  • an undesirable soaring of the ball the elevation when tightening the screw is avoided and the ball really is jammed and secondly that the ball has no play, which is unnecessary Unbalance and thus wear.
  • this rounding adapted to the sphere offers a permanent and tried and tested Safety.
  • Optimal circulation of the ball is further achieved by the fact that in the Bottom of the striking mechanism cage at least one channel with the cam control sleeve for the ball resulting circular groove is provided, which in interaction with the cam control sleeve is designed to enable the ball to lock.
  • This groove is located in the part of the striking mechanism cage facing the cam control sleeve.
  • a relief valve is assigned to the supply air duct of the impact wrench device.
  • This Relief valve opens in the event of excessive pressure and lets the air into the exhaust air duct flow. In this way, the air supplied to the engine is controlled or limited.
  • a maximum torque can be set using a suitable adjusting device be selected. This leads to the fact that with a pure rotating mechanism of the Impact wrench only tightened the screws to a specified seat which provides an optimal level of control over the tightening of the screws can be realized without the risk of destruction.
  • the Operators using a suitable key the final tight fit of the Adjust screw. Tightening the screws is therefore impossible.
  • a preferred embodiment of the invention provides that the longitudinal axis and thus the thrust axis of the impact wrench device parallel and below the drive axis the pneumatic motor arranged in the handle of the impact wrench device is.
  • This parallel arrangement of the two axes has the advantage that one Inadvertent switching on or off of the impact wrench device almost impossible can be. So the device can not be stored in a way that a button is inadvertently adjusted because it is used to switch the device on and off relevant buttons and adjustment devices in protected places or such Places where the device cannot be placed. Most of all it proves In the embodiment according to the invention, however, it is advantageous that the device is used with one hand can be operated because the switches are also operated with a conventional handle can be.
  • the invention is particularly characterized in that an impact wrench device is created in which the two functions of a rotating mechanism and one Combined turning / striking mechanism are realized.
  • an impact wrench device is created in which the two functions of a rotating mechanism and one Combined turning / striking mechanism are realized.
  • the device according to the invention acts like a screwdriver when loosening the screw like an impact wrench. This marks significant progress in terms of protecting the material and occupational safety achieved.
  • Fig. 1 shows an impact wrench device 1, consisting of the housing 30 and the handle 24.
  • this housing 30 is the pneumatic motor, not described in detail housed, which drives the shaft 4.
  • the size of the respective screw not shown here Nut that grips this and the torque of impact wrench 1 on transmits the screw, also not shown here. 1 is the parallel one Arrangement of the drive shaft 22 to the reversing shaft 23 can be seen.
  • the Reversing shaft 23 the corresponding direction of rotation, counterclockwise or clockwise rotation is selected and set.
  • the operator can, for example with the thumb, not shown here, on the back of the impact wrench Operate 1 attached buttons.
  • the impact screwdriver 1 shown here is initially connected to the air connection connected to the compressed air network. By pressing the operating lever 33 the valve stem 34 moves the valve ball 35 back so that the air enters the supply air duct 28 can reach.
  • the relief valve 21 is arranged above the supply air duct 28 and connected to it via the opening 36.
  • the valve spool 20 closes by the bias of the spring 38, the through hole between the opening 36 and Exhaust air opening 37.
  • the spring 38 can be adjusted via an adjusting device 40.
  • the torque to be applied by the impact wrench device 1 is predetermined, by checking the amount of air supplied to the engine. If the pressure in the Supply air duct 28 is higher than the value which the spring 38 receives with its pretension can, the relief valve 21 opens and allows the air through the exhaust port 37 flow into the exhaust air duct 29.
  • FIG. 3 shows the ball 10, which in the channel 9 formed by percussion cage 6, shaft 4 and track 3 runs all around.
  • the ball 10 is in a position in which it blocks the striking movement.
  • Ball 10 is to one side of cam control sleeve 2 and the other Side of the striking mechanism cage 6 included. This is made possible by the groove 19, which is arranged in the bottom 11 of the striking mechanism cage 6 and a movement of the Ball 10 over the edge of the groove 19 prevented.
  • Fig. 5 shows an illustration of the cam control sleeve 2, on which the web 3 in particular is easy to see.
  • the collar 26 is provided for the suitable transmission of the axial forces.
  • the ball 10 When tightening the screw clockwise, the ball 10 is in the bulge 16 of the survey 8. Because the ball 10 is on the inside of the channel 9 by the shaft 4 and on the outside by the striking mechanism cage 6, and on the Head side 7 of the cam control sleeve 2 also held by the striking mechanism cage 6 she cannot leave her position. Ball 10 rotates with the cam control sleeve 2 with, simultaneous axial displacement is excluded.
  • the bulge 16 is advantageously designed such that the ball 10 is as possible owns no game.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
EP98120362A 1998-07-28 1998-10-28 Clé à choc avec mécanisme de choc débrayable Withdrawn EP0976501A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833943 1998-07-28
DE19833943A DE19833943C2 (de) 1998-07-28 1998-07-28 Schlagschrauber

Publications (2)

Publication Number Publication Date
EP0976501A2 true EP0976501A2 (fr) 2000-02-02
EP0976501A3 EP0976501A3 (fr) 2001-04-18

Family

ID=7875577

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98120362A Withdrawn EP0976501A3 (fr) 1998-07-28 1998-10-28 Clé à choc avec mécanisme de choc débrayable

Country Status (7)

Country Link
US (1) US6135212A (fr)
EP (1) EP0976501A3 (fr)
JP (1) JP2000052268A (fr)
CN (1) CN1247792A (fr)
CA (1) CA2278321A1 (fr)
DE (1) DE19833943C2 (fr)
TW (1) TW453935B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008043337A1 (fr) * 2006-10-13 2008-04-17 Rodcraft Pneumatic Tools Gmbh & Co. Kg Visseuse à percussion à mécanisme de percussion à goujon et à limitation du couple

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10111748A1 (de) * 2001-03-12 2002-09-19 Hilti Ag Schaltwerk für ein kombiniertes Handwerkzeuggerät
DE10124569A1 (de) * 2001-05-14 2002-11-21 C & E Fein Gmbh & Co Kg Kraftgetriebener Schrauber mit Drehmomentbegrenzungskupplung
US6715380B2 (en) 2001-05-14 2004-04-06 C. & E. Fein Gmbh & Co. Kg Power-driven screwdriver
GB2383967A (en) * 2002-01-15 2003-07-16 Tranmax Machinery Co Ltd A torque restricting mechanism of a pin hammer-type hammering device
US6464017B1 (en) * 2002-04-26 2002-10-15 Li Chen Chen Transmission mechanism for pneumatic tool
US6889778B2 (en) * 2003-01-31 2005-05-10 Ingersoll-Rand Company Rotary tool
CN100393481C (zh) * 2004-10-27 2008-06-11 海峰机械工业股份有限公司 具油循环装置的动力工具
US7086109B2 (en) * 2004-11-03 2006-08-08 The Faucet Queens, Inc. Screwdriver with hammer end
US6983808B1 (en) * 2004-11-12 2006-01-10 Ting-Yuan Chen Power tool with oil circulation apparatus
US20060266537A1 (en) * 2005-05-27 2006-11-30 Osamu Izumisawa Rotary impact tool having a ski-jump clutch mechanism
SE529575C2 (sv) * 2005-11-17 2007-09-25 Atlas Copco Tools Ab Momentberoende utlösningskoppling för en skruvdragare
JP2008087085A (ja) * 2006-09-29 2008-04-17 Toyo Kuki Seisakusho:Kk パルスレンチ
US20080301880A1 (en) * 2007-06-11 2008-12-11 Calvert Norman D Power screw gun with hammer head
US7806198B2 (en) 2007-06-15 2010-10-05 Black & Decker Inc. Hybrid impact tool
SE532449C2 (sv) * 2008-05-14 2010-01-19 Atlas Copco Tools Ab Pneumatisk impulsmutterdragare med arbetsstyrorgan
US9193053B2 (en) 2008-09-25 2015-11-24 Black & Decker Inc. Hybrid impact tool
JP5269684B2 (ja) * 2009-04-16 2013-08-21 株式会社東日製作所 トルクレンチ
US8631880B2 (en) * 2009-04-30 2014-01-21 Black & Decker Inc. Power tool with impact mechanism
US8460153B2 (en) 2009-12-23 2013-06-11 Black & Decker Inc. Hybrid impact tool with two-speed transmission
US8584770B2 (en) 2010-03-23 2013-11-19 Black & Decker Inc. Spindle bearing arrangement for a power tool
US9272400B2 (en) 2012-12-12 2016-03-01 Ingersoll-Rand Company Torque-limited impact tool
US9737978B2 (en) 2014-02-14 2017-08-22 Ingersoll-Rand Company Impact tools with torque-limited swinging weight impact mechanisms
SE1451206A1 (sv) * 2014-10-09 2016-03-15 Atlas Copco Ind Tech Ab A power control device for a pneumatic impulse wrench.
CN105751134A (zh) * 2014-12-18 2016-07-13 苏州博来喜电器有限公司 冲击扳手
SE1550757A1 (sv) * 2015-06-09 2016-11-08 Atlas Copco Ind Technique Ab Pneumatic impulse wrench with power control means
JP6657527B2 (ja) * 2015-11-11 2020-03-04 株式会社マキタ 作業工具
US11534903B2 (en) * 2017-08-28 2022-12-27 Apex Brands, Inc. Power tool two-stage trigger
WO2020214062A1 (fr) * 2019-04-15 2020-10-22 Общество с ограниченной ответственностью "Перфобур" Dispositif de génération de charge axiale dans la composition d'une colonne de forage
CN111185999B (zh) * 2020-03-09 2025-07-29 西南交通大学 一种盾构管片模具侧模自动开合设备
CN112518650A (zh) * 2021-01-19 2021-03-19 漳州南方机械有限公司 一种采用一个按键切换并锁定气动扳手正反转功能的装置
CN113021241A (zh) * 2021-03-31 2021-06-25 杭州暖欧贸易有限公司 一种滑丝内角螺栓专用拆卸设备
FR3130669B1 (fr) * 2021-12-22 2024-02-02 Renault Georges Ets Dispositif de vissage à impact à transmission progressive d’énergie cinétique

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1087538B (de) * 1953-01-05 1960-08-18 Chicago Pneumatic Tool Co Drehschlagwerkzeug
DE1156717B (de) * 1959-12-11 1963-10-31 Bosch Gmbh Robert Motorisch angetriebenes Drehschlaggeraet, insbesondere Elektroschrauber
SE320334B (fr) * 1968-09-24 1970-02-02 Atlas Copco Ab
DE2313402A1 (de) * 1973-03-17 1974-09-26 Bosch Gmbh Robert Drehschlagwerkzeug
US4313505A (en) * 1979-08-27 1982-02-02 Rodac Pneumatic Tools Rotary impact clutch
JPS6347494A (ja) * 1986-08-18 1988-02-29 株式会社　リツト 空気衝撃工具
JPH0763938B2 (ja) * 1988-03-26 1995-07-12 信濃空圧工業株式会社 インパクトクラッチ
US5083619A (en) * 1989-09-25 1992-01-28 Chicago Pneumatic Tool Company Powered impact wrench
DE9303715U1 (de) * 1993-03-13 1993-10-21 Rodcraft Pneumatic Tools GmbH, 45479 Mülheim Schlagschrauber-Handgerät
EP0733439A1 (fr) * 1995-03-22 1996-09-25 Saburo Nakajima Structure de support d'une broche d'enclume dans une clé à impulsion, à came
US5622230A (en) * 1995-06-15 1997-04-22 Chicago Pneumatic Tool Company Rotary impact wrench clutch improvement
US6003618A (en) * 1997-07-29 1999-12-21 Chicago Pneumatic Tool Company Twin lobe impact mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008043337A1 (fr) * 2006-10-13 2008-04-17 Rodcraft Pneumatic Tools Gmbh & Co. Kg Visseuse à percussion à mécanisme de percussion à goujon et à limitation du couple

Also Published As

Publication number Publication date
JP2000052268A (ja) 2000-02-22
DE19833943C2 (de) 2000-07-13
CA2278321A1 (fr) 2000-01-28
TW453935B (en) 2001-09-11
US6135212A (en) 2000-10-24
CN1247792A (zh) 2000-03-22
EP0976501A3 (fr) 2001-04-18
DE19833943A1 (de) 2000-02-10

Similar Documents

Publication Publication Date Title
EP0976501A2 (fr) Clé à choc avec mécanisme de choc débrayable
DE3918227C1 (fr)
EP2129496B1 (fr) Machine-outil portative
EP0650805A1 (fr) Outil électrique
EP1935572A1 (fr) Dispositif d'enfoncement à main
DE19501084A1 (de) Kupplungsmomentsteuerung für ein kraftgetriebenes Werkzeug
EP2755804A1 (fr) Machine-outil motorisée
CH692959A5 (de) Vorrichtung zur Arretierung einer Welle.
DE4218683C2 (de) Handstückkopf für ein zahnärztliches Handstück, mit einem Gehäuse, in dem ein Behandlungswerkzeug axial längs seiner Mittelachse hin und her verschiebbar gelagert ist
DE69802778T2 (de) Pneumatischer Schrauber
EP0333731A1 (fr) Outillage a main portatif, notamment meuleuse d'angle
EP0239670B1 (fr) Machine motorisée avec réglage du couple, en particulier outillages électriques
DE3912991A1 (de) Handschraub- und/oder handbohrgeraet
DE2721102C2 (fr)
DE102014104367A1 (de) Bohrvorrichtung und Rutschkupplung für eine Bohrvorrichtung
DE2920065A1 (de) Motorisch angetriebene handwerkzeugmaschine zum bohren, schlagbohren und schrauben
DE4233150A1 (de) Handschraubgerät mit Tiefenanschlag
DE2840140C2 (fr)
DE1703846A1 (de) Kraftgetriebenes Schlagdrehwerkzeug
DE4305967A1 (de) Schaltvorrichtung für Elektrowerkzeuge
DE102010007917B4 (de) Handbetätigtes Werkzeug
DE1159867B (de) Schlagschrauber mit drehmomentabhaengiger Abschaltung des insbesondere elektromotorischen Antriebs
DE1478858A1 (de) Drehmoment-Steuerhilfsmittel fuer kraftbetriebene Werkzeuge
DE102005063016A1 (de) Handwerkzeugmaschine mit Drehgriffverstelleinrichtung
DE102016224577A1 (de) Handwerkzeugmaschine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL PAYMENT 19981028;LT PAYMENT 19981028;LV PAYMENT 19981028;MK PAYMENT 19981028;RO PAYMENT 19981028;SI PAYMENT 19981028

17P Request for examination filed

Effective date: 20000701

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL PAYMENT 19981028;LT PAYMENT 19981028;LV PAYMENT 19981028;MK PAYMENT 19981028;RO PAYMENT 19981028;SI PAYMENT 19981028

AKX Designation fees paid

Free format text: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT

AXX Extension fees paid

Free format text: AL PAYMENT 19981028;LT PAYMENT 19981028;LV PAYMENT 19981028;MK PAYMENT 19981028;RO PAYMENT 19981028;SI PAYMENT 19981028

RBV Designated contracting states (corrected)

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

17Q First examination report despatched

Effective date: 20030220

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20030701