EP1946892A3 - Impact wrench - Google Patents

Impact wrench Download PDF

Info

Publication number
EP1946892A3
EP1946892A3 EP07022437A EP07022437A EP1946892A3 EP 1946892 A3 EP1946892 A3 EP 1946892A3 EP 07022437 A EP07022437 A EP 07022437A EP 07022437 A EP07022437 A EP 07022437A EP 1946892 A3 EP1946892 A3 EP 1946892A3
Authority
EP
European Patent Office
Prior art keywords
output shaft
drive shaft
striker
spring force
shaft
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
EP07022437A
Other languages
German (de)
French (fr)
Other versions
EP1946892B1 (en
EP1946892A2 (en
Inventor
Bernd Fleischmann
Jens Zieger
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.)
Protool GmbH
Original Assignee
Protool 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 Protool GmbH filed Critical Protool GmbH
Publication of EP1946892A2 publication Critical patent/EP1946892A2/en
Publication of EP1946892A3 publication Critical patent/EP1946892A3/en
Application granted granted Critical
Publication of EP1946892B1 publication Critical patent/EP1946892B1/en
Ceased legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

Ein vom Schlagbetrieb auf Nichtschlagbetrieb umschaltbarer Schlagschrauber enthält eine Antriebswelle (4), eine Abtriebswelle (5) und einen durch Federkraft zur Abtriebswelle (5) hin beaufschlagten Schlagkörper (22), der in einer vorderen Position in Drehmitnahmeeingriff mit der Abtriebswelle (5) steht. Der Schlagkörper (22) ist treibend mit der Antriebswelle (4) verbunden. Wirkt beim Schlagbetrieb auf die Abtriebswelle (5) von außen her ein Grenz-Gegenmoment ein, bewegt sich der Schlagkörper (22) entgegen der Federkraft nach hinten mit überlagerter Drehbewegung relativ zur Antriebswelle (4). Der Schlagkörper (22) dreht sich dann an der Abtriebswelle (5) vorbei und gelangt anschließend unter der Federkraft wieder in seine vordere Position und übt auf die Abtriebswelle (5) einen Schlag in Umfangsrichtung aus. Die Umschalteinrichtung enthält einen radial außerhalb der Antriebswelle (4) konzentrisch zu dieser angeordneten Schaltring (35), der an einem drehfest mit der Antriebswelle (4) verbundenen Schaltring-Lagerteil (37) drehfest und axial verschiebbar gelagert ist und beim Verschieben aus einer unwirksamen Stellung in eine wirksame Stellung in drehfesten Verriegelungseingriff mit dem Schlagkörper (22) gelangt.

Figure imgaf001
An impact wrench switchable to non-impact operation includes an input shaft (4), an output shaft (5), and a shock body (22) urged by the spring force toward the output shaft (5) and rotationally engaged with the output shaft (5) in a forward position. The striker (22) is drivingly connected to the drive shaft (4). Acts during impact operation on the output shaft (5) from the outside a limit counter-torque, the striker (22) moves against the spring force to the rear with superimposed rotational movement relative to the drive shaft (4). The striker (22) then rotates past the output shaft (5) and then returns under the spring force in its forward position and exerts on the output shaft (5) a blow in the circumferential direction. The switching device includes a radially outside of the drive shaft (4) arranged concentrically to this switching ring (35) rotatably and axially displaceably mounted on a rotatably connected to the drive shaft (4) switching ring bearing part (37) and when moving from an inoperative position in an operative position in rotationally fixed locking engagement with the impactor body (22) passes.
Figure imgaf001
EP20070022437 2007-01-20 2007-11-20 Impact wrench Ceased EP1946892B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710003037 DE102007003037A1 (en) 2007-01-20 2007-01-20 impact wrench

Publications (3)

Publication Number Publication Date
EP1946892A2 EP1946892A2 (en) 2008-07-23
EP1946892A3 true EP1946892A3 (en) 2009-06-03
EP1946892B1 EP1946892B1 (en) 2011-05-04

Family

ID=39284012

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070022437 Ceased EP1946892B1 (en) 2007-01-20 2007-11-20 Impact wrench

Country Status (2)

Country Link
EP (1) EP1946892B1 (en)
DE (2) DE102007003037A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9193053B2 (en) * 2008-09-25 2015-11-24 Black & Decker Inc. Hybrid impact tool
CN102019608B (en) * 2009-09-10 2013-07-03 苏州宝时得电动工具有限公司 Power tool
TW201208829A (en) * 2010-06-30 2012-03-01 Hitachi Koki Kk Impact tool
DE102015209406A1 (en) * 2015-05-22 2016-11-24 Robert Bosch Gmbh Hand tool with a mechanical rotary impact mechanism
DE102017101948A1 (en) 2017-02-01 2018-08-02 Festool Gmbh impact wrench
DE102018118196A1 (en) 2018-07-27 2020-01-30 Festool Gmbh Hand machine tools, in particular impact wrenches

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02139182A (en) * 1988-11-15 1990-05-29 Matsushita Electric Works Ltd Rotating impact tool
GB2274416A (en) * 1993-01-22 1994-07-27 Bosch Gmbh Robert Percussion screwdriver
EP1050381A2 (en) * 1999-04-30 2000-11-08 Matsushita Electric Works, Ltd. Impact rotary tool
EP1574294A2 (en) * 2004-03-10 2005-09-14 Makita Corporation Impact driver
EP1714745A2 (en) * 2005-04-21 2006-10-25 TechTronic Industries, Co., Ltd Mode selector mechanism for an impact driver

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02139182A (en) * 1988-11-15 1990-05-29 Matsushita Electric Works Ltd Rotating impact tool
GB2274416A (en) * 1993-01-22 1994-07-27 Bosch Gmbh Robert Percussion screwdriver
EP1050381A2 (en) * 1999-04-30 2000-11-08 Matsushita Electric Works, Ltd. Impact rotary tool
EP1574294A2 (en) * 2004-03-10 2005-09-14 Makita Corporation Impact driver
EP1714745A2 (en) * 2005-04-21 2006-10-25 TechTronic Industries, Co., Ltd Mode selector mechanism for an impact driver

Also Published As

Publication number Publication date
EP1946892B1 (en) 2011-05-04
DE502007007112D1 (en) 2011-06-16
EP1946892A2 (en) 2008-07-23
DE102007003037A1 (en) 2008-07-24

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