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EP0876880A3 - Drill- and/or percussion apparatus - Google Patents

Drill- and/or percussion apparatus Download PDF

Info

Publication number
EP0876880A3
EP0876880A3 EP98810142A EP98810142A EP0876880A3 EP 0876880 A3 EP0876880 A3 EP 0876880A3 EP 98810142 A EP98810142 A EP 98810142A EP 98810142 A EP98810142 A EP 98810142A EP 0876880 A3 EP0876880 A3 EP 0876880A3
Authority
EP
European Patent Office
Prior art keywords
guide tube
striker
plane
air passages
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.)
Granted
Application number
EP98810142A
Other languages
German (de)
French (fr)
Other versions
EP0876880B1 (en
EP0876880A2 (en
Inventor
Jens Frenzel
Helmut Nussrainer
Reinhard Dr. Schulz
Hans-Werner Bongers-Ambrosius
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
Publication of EP0876880A2 publication Critical patent/EP0876880A2/en
Publication of EP0876880A3 publication Critical patent/EP0876880A3/en
Application granted granted Critical
Publication of EP0876880B1 publication Critical patent/EP0876880B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D11/00—Portable percussive tools with electromotor or other motor drive
    • B25D11/06—Means for driving the impulse member
    • B25D11/12—Means for driving the impulse member comprising a crank mechanism
    • B25D11/125—Means for driving the impulse member comprising a crank mechanism with a fluid cushion between the crank drive and the striking body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D11/00—Portable percussive tools with electromotor or other motor drive
    • B25D11/005—Arrangements for adjusting the stroke of the impulse member or for stopping the impact action when the tool is lifted from the working surface

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

Das Bohr- und/oder Meisselgerät weist ein Schlagwerk (6) auf, dessen Kolben (7) über ein Luftpolster einen in einem Führungsrohr (9) geführten, mit einem Döpper (17) zusammenwirkenden Schläger (19) hin- und herversetzt. Zwischen dem Kolben (7) und dem Schläger (19) weist das Führungsrohr (9) mehrere entlang einer senkrecht zur Bearbeitungsrichtung verlaufenden ersten Ebene (E1) über den Umfang verteilte, radial verlaufende Luftdurchlässe (10) sowie einen der Steuerung der Luftdurchlässe (10) dienenden, mit dem Döpper (17) zusammenwirkenden Steuerkörper auf, der gegenüber dem Führungsrohr (9) hin- und herversetzbar ist. Das Führungsrohr (9) weist mehrere radial verlaufende weitere Luftdurchlässe (11) auf, die entlang wenigstens einer von der ersten Ebene (E1) entgegen der Bearbeitungsrichtung beabstandeten weiteren Ebene (E2) über den Umfang verteilt sind.

Figure 00000001
The drilling and / or chiseling device has a striking mechanism (6), the piston (7) of which, via an air cushion, displaces a racket (19), which is guided in a guide tube (9) and interacts with a striker (17). Between the piston (7) and the striker (19), the guide tube (9) has a plurality of radially extending air passages (10) distributed along the circumference along a first plane (E1) running perpendicular to the machining direction, and one for controlling the air passages (10) serving, with the striker (17) cooperating control body, which can be moved back and forth with respect to the guide tube (9). The guide tube (9) has a plurality of radially extending further air passages (11) which are distributed along the circumference along at least one further plane (E2) spaced from the first plane (E1) counter to the machining direction.
Figure 00000001
EP98810142A 1997-04-07 1998-02-23 Drill- and/or percussion apparatus Expired - Lifetime EP0876880B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19714288A DE19714288A1 (en) 1997-04-07 1997-04-07 Drilling and / or chiseling device
DE19714288 1997-04-07

Publications (3)

Publication Number Publication Date
EP0876880A2 EP0876880A2 (en) 1998-11-11
EP0876880A3 true EP0876880A3 (en) 2002-11-27
EP0876880B1 EP0876880B1 (en) 2006-11-15

Family

ID=7825677

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98810142A Expired - Lifetime EP0876880B1 (en) 1997-04-07 1998-02-23 Drill- and/or percussion apparatus

Country Status (5)

Country Link
US (1) US5975217A (en)
EP (1) EP0876880B1 (en)
JP (1) JP4195119B2 (en)
CN (1) CN1065165C (en)
DE (2) DE19714288A1 (en)

Families Citing this family (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6309829B1 (en) * 1997-05-27 2001-10-30 Pe Corporation (Ny) Length determination of nucleic acid repeat sequences by discontinuous primer extension
GB9902789D0 (en) * 1999-02-09 1999-03-31 Black & Decker Inc Rotary hammer
GB9902793D0 (en) * 1999-02-09 1999-03-31 Black & Decker Inc Rotary hammer
DE19929183B4 (en) * 1999-06-25 2004-07-29 Wacker Construction Equipment Ag Air spring hammer mechanism with hollow impact piston with idle opening
DE19955412A1 (en) * 1999-11-18 2001-05-23 Hilti Ag Drilling and chiseling device
DE10019071A1 (en) * 2000-04-18 2001-10-25 Hilti Ag Electric hand tool device with blank stop
DE10033362A1 (en) * 2000-07-08 2002-01-17 Hilti Ag Electric hand tool with empty stroke shutdown
DE10111717C1 (en) * 2001-03-12 2002-10-24 Wacker Werke Kg Air spring hammer mechanism with motion frequency controlled idle state
GB0109747D0 (en) * 2001-04-20 2001-06-13 Black & Decker Inc Hammer
DE10121088A1 (en) * 2001-04-28 2002-11-07 Bosch Gmbh Robert Hammer drill and / or chisel hammer
DE10145464C2 (en) * 2001-09-14 2003-08-28 Wacker Construction Equipment Drill and / or impact hammer with idle control depending on the contact pressure
JP4016772B2 (en) * 2001-11-16 2007-12-05 日立工機株式会社 Hammer drill
DE10156388A1 (en) * 2001-11-16 2003-06-05 Bosch Gmbh Robert Hand tool with a pneumatic striking mechanism
DE10333799B3 (en) * 2003-07-24 2005-02-17 Wacker Construction Equipment Ag Hollow piston impact mechanism with air compensation and idling opening
JP4179159B2 (en) * 2003-12-18 2008-11-12 日立工機株式会社 Impact tool
EP1607187B1 (en) * 2004-06-18 2010-04-28 HILTI Aktiengesellschaft Device for improving the deactivation response of an electropneumatic percussive tool
US7325624B2 (en) * 2004-11-24 2008-02-05 Hitachi Koki Co., Ltd. Hammer drill having switching mechanism for switching operation modes
DE102005028918A1 (en) * 2005-06-22 2006-12-28 Wacker Construction Equipment Ag Drilling and/or percussive hammer for making holes has delay device controlling valve during closing
DE102005036560A1 (en) * 2005-08-03 2007-02-08 Wacker Construction Equipment Ag Drilling and / or percussion hammer with linear drive and air cooling
US7383895B2 (en) 2005-08-19 2008-06-10 Makita Corporation Impact power tool
JP4509890B2 (en) * 2005-08-19 2010-07-21 株式会社マキタ Impact type work tool
JP5041575B2 (en) * 2006-03-07 2012-10-03 日立工機株式会社 Impact tool
DE102007000081A1 (en) * 2007-02-08 2008-08-21 Hilti Ag Hand tool with pneumatic percussion
JP4965334B2 (en) * 2007-05-14 2012-07-04 株式会社マキタ Impact tool
US8485274B2 (en) * 2007-05-14 2013-07-16 Makita Corporation Impact tool
JP4889564B2 (en) * 2007-05-14 2012-03-07 株式会社マキタ Impact tool
JP4965333B2 (en) * 2007-05-14 2012-07-04 株式会社マキタ Impact tool
US9216502B2 (en) 2008-04-03 2015-12-22 Black & Decker Inc. Multi-stranded return spring for fastening tool
US8534527B2 (en) * 2008-04-03 2013-09-17 Black & Decker Inc. Cordless framing nailer
DE102008064221B4 (en) * 2008-12-22 2016-03-17 Koki Technik Transmission Systems Gmbh shift fork
US8636081B2 (en) 2011-12-15 2014-01-28 Milwaukee Electric Tool Corporation Rotary hammer
JP5518617B2 (en) * 2010-08-02 2014-06-11 株式会社マキタ Impact tool
DE102010062874A1 (en) * 2010-12-13 2012-06-14 Hilti Aktiengesellschaft Hand tool
US8393409B2 (en) * 2010-12-29 2013-03-12 Ortho Technologies, Llc Electric motor driven tool for orthopedic impacting
US8695726B2 (en) 2010-12-29 2014-04-15 Medical Enterprises LLC Electric motor driven tool for orthopedic impacting
EP3517064B1 (en) 2010-12-29 2023-09-06 DePuy Synthes Products, Inc. Electric motor driven tool for orthopedic impacting
EP3636389A1 (en) 2012-02-03 2020-04-15 Milwaukee Electric Tool Corporation Rotary hammer
DE102012209020A1 (en) * 2012-05-29 2013-12-05 Robert Bosch Gmbh Hand-held power tool rammer installed in e.g. drilling hammer, has shock damping unit that damps racket, and enables multi-stage attenuation
US9399281B2 (en) 2012-09-20 2016-07-26 Black & Decker Inc. Stall release lever for fastening tool
US9346158B2 (en) 2012-09-20 2016-05-24 Black & Decker Inc. Magnetic profile lifter
EP2821183B1 (en) 2013-07-05 2017-06-21 Black & Decker Inc. Hammer Drill
EP2857150A1 (en) * 2013-10-03 2015-04-08 HILTI Aktiengesellschaft Manual tool machine
WO2015133198A1 (en) * 2014-03-03 2015-09-11 日立工機株式会社 Striking tool
EP3181300A1 (en) * 2015-12-15 2017-06-21 HILTI Aktiengesellschaft Percussive handheld machine tool
CN106895131B (en) * 2015-12-21 2024-01-23 博世电动工具（中国）有限公司 Sealing ventilation device and equipment comprising same
WO2020056654A1 (en) * 2018-09-20 2020-03-26 博世电动工具（中国）有限公司 Impact machine tool
EP4126463A4 (en) * 2020-04-02 2024-05-08 Milwaukee Electric Tool Corporation Power tool
EP4382254A1 (en) 2022-12-07 2024-06-12 Hilti Aktiengesellschaft Striking mechanism for a hand-held electric tool and hand-held electric tool
US12427638B2 (en) * 2022-12-20 2025-09-30 Milwaukee Electric Tool Corporation Percussion tool

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5111890A (en) * 1988-08-02 1992-05-12 Robert Bosch Gmbh Hammer drill
US5456324A (en) * 1993-11-26 1995-10-10 Hitachi Koki Company Limited Percussion hammer
EP0759341A2 (en) * 1995-08-18 1997-02-26 Makita Corporation Hammer drill with an idling strike prevention mechanism

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2580158A (en) * 1948-12-23 1951-12-25 Dean William Henry Power-operated portable tool
US4113035A (en) * 1977-04-21 1978-09-12 Licentia Patent-Verwaltungs-G.M.B.H. Hammer drill with drive and percussion elements accommodated in a cylinder
US4442906A (en) * 1980-11-18 1984-04-17 Black & Decker Inc. Percussive drills
DE3304916A1 (en) * 1983-02-12 1984-08-16 Robert Bosch Gmbh, 7000 Stuttgart DRILLING HAMMER
DE3932134A1 (en) * 1989-09-27 1991-04-04 Bosch Gmbh Robert Motor driven hammer - has indirect air cushion striker action which can be adjusted from outside
DE4239294A1 (en) * 1992-11-23 1994-05-26 Black & Decker Inc Hammer drill with pneumatic hammer mechanism
JP3292972B2 (en) * 1996-03-29 2002-06-17 株式会社マキタ Impact tool

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5111890A (en) * 1988-08-02 1992-05-12 Robert Bosch Gmbh Hammer drill
US5456324A (en) * 1993-11-26 1995-10-10 Hitachi Koki Company Limited Percussion hammer
EP0759341A2 (en) * 1995-08-18 1997-02-26 Makita Corporation Hammer drill with an idling strike prevention mechanism

Also Published As

Publication number Publication date
US5975217A (en) 1999-11-02
JP4195119B2 (en) 2008-12-10
EP0876880B1 (en) 2006-11-15
JPH10309679A (en) 1998-11-24
DE59813801D1 (en) 2006-12-28
CN1065165C (en) 2001-05-02
CN1197716A (en) 1998-11-04
EP0876880A2 (en) 1998-11-11
DE19714288A1 (en) 1998-10-08

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