EP1441880B1 - Handwerkzeugmaschine - Google Patents

Handwerkzeugmaschine Download PDF

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Publication number
EP1441880B1
EP1441880B1 EP02754269A EP02754269A EP1441880B1 EP 1441880 B1 EP1441880 B1 EP 1441880B1 EP 02754269 A EP02754269 A EP 02754269A EP 02754269 A EP02754269 A EP 02754269A EP 1441880 B1 EP1441880 B1 EP 1441880B1
Authority
EP
European Patent Office
Prior art keywords
tool holder
housing
transmission unit
portable power
hammer tube
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.)
Expired - Lifetime
Application number
EP02754269A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1441880A1 (de
Inventor
Axel Kuhnle
Helmut Wanek
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 EP1441880A1 publication Critical patent/EP1441880A1/de
Application granted granted Critical
Publication of EP1441880B1 publication Critical patent/EP1441880B1/de
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
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
    • B25D17/084—Rotating chucks or sockets
    • B25D17/088—Rotating chucks or sockets with radial movable locking elements co-operating with bit shafts specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D2216/0076—Angular position of the chisel modifiable by hand
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D2217/003—Details relating to chucks with radially movable locking elements
    • B25D2217/0053—Devices for securing the tool retainer to the machine part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/051—Couplings, e.g. special connections between components

Definitions

  • the invention relates to a hand tool according to the preamble of claim 1.
  • a generic hand tool known from the DE 100 01 193 A1 is a generic hand tool known.
  • DE 195 03 525 A1 a hammer is known, in the housing a hammer tube is arranged with a separate tool holder from this.
  • On the hammer tube a plurality of locking recesses are arranged distributed on the circumference of the circumference of the tool holder on a side facing in the openings of the tool holder held locking body can intervene.
  • the tool holder encloses the hammer tube radially in an overlap region and can be fixed radially inwardly over the locking body and the hammer tube in the direction of rotation.
  • the locking body are held by a tool holder radially enclosing locking sleeve in the engaged position.
  • the locking sleeve is rotatable relative to the tool holder mounted and has to unlock the tool holder radial pockets.
  • the invention relates to a hand tool, in particular a percussion hammer, with a housing, a hammer tube and a tool holder, which is fixable in the direction of rotation via at least one locking body.
  • the tool holder can be fixed radially outward via at least one transmission unit in the direction of rotation on the housing. It is a hand tool reachable, the components of the transmission unit, in particular wear parts, can be easily replaced. A complete disassembly of the power tool can advantageously be avoided and costs, in particular repair costs, can be reduced.
  • a tool fastened in the tool holder in particular a shaping tool, can advantageously be changed in its position. Ease of use can be increased and it is more convenient for an operator to work.
  • the transmission unit is supported in the direction of rotation by at least one toothing on the housing, existing components can be used to advantage and additional components can be used be saved. Space can be saved and weight, assembly costs and installation costs can be reduced.
  • the toothing is advantageously integrally formed on the actuating sleeve, via which the tool holder can be fixed to the housing with the corresponding toothing. It is a device with a few additional components achievable, in which forces that can be transmitted via the actuating sleeve to the housing, can be distributed over a large transfer surface. A load of the components can be advantageously reduced, and wear of the components can be reduced.
  • the tool holder is connected via a claw ring of the transmission unit with the actuating sleeve.
  • the claw ring structurally simple and inexpensive overall a large transfer area, a small surface pressure, a small wear and a long life of the components can be achieved.
  • the claw ring can be quickly and easily assembled or disassembled.
  • the claw ring can be made in one piece with an already existing component, such as with the actuating sleeve, whereby additional components can be saved.
  • the claw ring and the actuating sleeve can advantageously correspond to one of the function Be formed material, namely the claw ring made of metal and the actuating sleeve made of plastic.
  • claws of the claw ring in cross-section at least partially have a trapezoidal shape.
  • a transfer surface can be increased in relation to claws with rectangular cross-sectional areas, and particularly large torques can be transmitted.
  • the hammer tube radially surrounds the tool holder in an overlap region, whereby the tool holder can be mounted structurally simple rotatable in or with the hammer tube and easily assembled and disassembled.
  • the hammer tube and the tool holder are firmly connected to one another via the transmission unit in at least one direction.
  • the hammer tube and the tool holder can be structurally simply fixed with few components in the direction of rotation and / or in the axial direction with each other. If the hammer tube and the tool holder are fixed together in the axial direction, the transmission unit can advantageously be used for switching between an idle position and an operating position.
  • the hammer tube and the tool holder can be structurally simple and inexpensive rotatably connected to each other, via radial bores in the hammer tube and in the tool holder.
  • the connection between the hammer tube and the tool holder can, however, also be produced by another connecting body which appears suitable to the person skilled in the art.
  • the bolt is supported radially inwardly on a firing pin.
  • the bolt can be stored in continuous radial bores, which are inexpensive to produce.
  • Fig. 1 shows a percussion hammer with an electric motor not shown in detail in a housing 10 and a hammer mechanism over which a clamped in a tool holder 36 flat chisel 38 is driven to strike.
  • a first handle 40 extending perpendicularly to the actuating direction is fastened to the housing 10.
  • a second, perpendicular to the actuating direction extending, bow-shaped handle 42 is attached.
  • the tool holder 36 has a tool holder 14, which is designed separately from a hammer tube 12 ( Fig. 2 and Fig. 3 ).
  • the hammer tube 12 radially encloses the tool holder 14 with its end pointing in the machining direction 68 in an overlapping region.
  • the hammer tube 12 and the tool holder 14 have four continuous radial bores 44, 46 which are distributed uniformly around their circumference.
  • the radial bores 44, 46 are superimposed and form a guide for bolt-formed locking body 16, which pass through the radial bores 44, 46 and are supported radially inwardly on a firing pin 34.
  • the hammer tube 12 is enclosed radially by a claw ring 30 of a transmission unit 20 which is fixed in the axial direction on the hammer tube 12 via retaining rings 26 (FIG. Fig. 2 ).
  • the claw ring 30 has four radial grooves 48, which are arranged distributed uniformly over the inner circumference of the claw ring 30 and lie in the mounted state over the radial bores 44, 46.
  • the four formed as a bolt locking body 16 engage positively.
  • the tool holder 14 and the hammer tube 12 are fixedly connected to each other via the locking body 16 designed as a bolt in the direction of rotation 18 and in the axial direction and are connected via the locking body 16 in the direction of rotation 18 with the claw ring 30.
  • the claw ring 30 has at its radially outer circumference claws 32 which engage in corresponding recesses 50 which are integrally formed on a radially inwardly facing circumference of an actuating sleeve 28 ( Fig. 3 ).
  • the tool holder 14 and the hammer tube 12 are positively connected via the claw ring 30 with the actuating sleeve 28 in the direction of rotation 18.
  • a toothing 22 is integrally formed on its end remote from the tool holder 36 at its inner periphery.
  • the toothing 22 engages radially inwardly in a form-fitting manner in a corresponding toothing 24, which is integrally formed on the outer circumference at an end of the housing 10 facing the tool holder 36.
  • the actuating sleeve 28 is fixed to the housing 22 in the direction of rotation 18.
  • the actuating sleeve 28 and the claw ring 30 form the transmission unit 20, via which the tool holder 14 with the locking bodies designed as a bolt 16 can be fixed radially outwardly in the direction of rotation 18 in a plurality of rotational positions on the housing 10.
  • the teeth 22, 24 are disengaged.
  • the recesses 50 of the actuating sleeve 28 and the claws 32 of the claw ring 30, which are movable toward each other in the axial direction, remain engaged with each other in the circumferential direction.
  • the tool holder 14 is rotatable in the direction of rotation 18 via the transmission unit 20 and the locking bodies 16 or via the actuating sleeve 28, the claw ring 30 and via the locking bodies 16. During the rotational movement, the hammer tube 12 and the tool holder 14 are rotated together.
  • a dust cap 56 and an actuating sleeve 58 which forms part of the tool holder 36, a sealing unit 72 and locking body 60, which hold the flat chisel 38 rotatably and axially displaceable in the tool holder 14, disassembled.
  • the now accessible spring element 52 can be removed.
  • the claw ring 30 can be withdrawn in the machining direction 68 and formed as a bolt locking body 16 can be removed.
  • the tool holder 14 can then be removed and replaced.
  • the operator can replace it together with the firing pin 34 and convert the percussion hammer to a new, alternative inserting system without having to disassemble the percussion hammer completely.
  • FIG. 4 an alternative claw ring 62 and an alternative actuating sleeve 66 is shown in fragmentary form. Substantially identical components are basically numbered with the same reference numerals. Furthermore, with regard to features and functions that are the same, the description of the exemplary embodiment in FIGS Fig. 1 to 3 to get expelled. The following description is essentially limited to the differences from the embodiment in the Fig. 3 ,
  • Fig. 4 shows an enlarged view of a claw 70 of the claw ring 62.
  • the claw 70 has in its cross-section on a trapezoidal shape which engages positively in a corresponding trapezoidal recess 64 of the actuating sleeve 66.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
EP02754269A 2001-10-26 2002-06-26 Handwerkzeugmaschine Expired - Lifetime EP1441880B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10152959 2001-10-26
DE10152959A DE10152959B4 (de) 2001-10-26 2001-10-26 Handwerkzeugmaschine
PCT/DE2002/002323 WO2003037571A1 (de) 2001-10-26 2002-06-26 Handwerkzeugmaschine

Publications (2)

Publication Number Publication Date
EP1441880A1 EP1441880A1 (de) 2004-08-04
EP1441880B1 true EP1441880B1 (de) 2010-11-10

Family

ID=7703845

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02754269A Expired - Lifetime EP1441880B1 (de) 2001-10-26 2002-06-26 Handwerkzeugmaschine

Country Status (6)

Country Link
US (1) US7028786B2 (zh)
EP (1) EP1441880B1 (zh)
JP (1) JP4382485B2 (zh)
CN (1) CN1304173C (zh)
DE (2) DE10152959B4 (zh)
WO (1) WO2003037571A1 (zh)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6981334B2 (en) * 2003-05-29 2006-01-03 United Technologies Corporation Dual wedge fixture locator
DE10359572A1 (de) * 2003-12-18 2005-07-28 Robert Bosch Gmbh Schlagwerk für eine repetierend schlagende Handwerkzeugmaschine
DE102004036587A1 (de) * 2004-07-28 2006-03-23 Robert Bosch Gmbh Aufnahmevorrichtung für eine Werkzeugmaschine mit einem Werkzeughalter sowie Werkzeughalter
DE102006036955A1 (de) * 2006-08-08 2008-02-14 Robert Bosch Gmbh Werkzeugaufnahme
DE102006061627A1 (de) * 2006-12-27 2008-07-10 Robert Bosch Gmbh Schlagwerk einer Elektrohandwerkzeugmaschine
DE102007057453A1 (de) * 2007-11-29 2009-06-04 Robert Bosch Gmbh Handwerkzeugmaschine
DE102009027316A1 (de) 2009-06-30 2011-01-05 Robert Bosch Gmbh Handwerkzeugmaschinenhaltevorrichtung, insbesondere Bohr- und/oder Meißelhammerhaltevorrichtung
EP3067152A1 (de) * 2015-03-10 2016-09-14 HILTI Aktiengesellschaft Mitnahmehülse in Werkzeugaufnahme

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2728961C2 (de) 1977-06-27 1991-08-08 Hilti Ag, Schaan Bohrhammer mit arretierbarem Werkzeughalter
DE3828309C3 (de) * 1988-08-20 1998-07-30 Bosch Gmbh Robert Bohrhammer
DE4104131A1 (de) * 1990-05-08 1991-11-14 Bosch Gmbh Robert Handbohrmaschine
DE4100186A1 (de) * 1991-01-05 1992-07-09 Bosch Gmbh Robert Handwerkzeugmaschine mit abnehmbaren werkzeughalter
US5437465A (en) * 1993-10-22 1995-08-01 Atlas Copco Elektrowerkzeuge Gmbh Tool changing device on a hand-operated machine tool
DE4418103A1 (de) * 1994-05-24 1995-11-30 Hilti Ag Bohr- und/oder Meisselgerät
DE4419826A1 (de) * 1994-06-07 1995-12-14 Bosch Gmbh Robert Werkzeughalter für eine Handbohrmaschine, insbesondere für einen Bohrhammer, sowie Handbohrmaschine mit Werkzeughalter
JP3041211B2 (ja) * 1994-12-02 2000-05-15 アイシン・エィ・ダブリュ株式会社 自動変速機の油圧制御装置
DE19503525B4 (de) 1995-02-03 2004-10-28 Robert Bosch Gmbh Handwerkzeugmaschine, insbesondere Bohr- und/oder Schlaghammer
DE19621610B4 (de) 1996-05-30 2016-06-23 Robert Bosch Gmbh Einrichtung zum Wechseln des Werkzeughalters an einer Handwerkzeugmaschine
JPH11104974A (ja) 1997-10-06 1999-04-20 Makita Corp 打撃工具
US6688611B2 (en) * 1997-12-12 2004-02-10 Black & Decker Inc. Removable chuck
DE10001193B4 (de) * 2000-01-14 2005-10-20 Bosch Gmbh Robert Handwerkzeugmaschine mit einer Werkzeughalterung zur Festlegung des Werkzeugs in Drehrichtung
JP2001225282A (ja) 2000-02-10 2001-08-21 Hitachi Koki Co Ltd 衝撃工具の工具保持装置

Also Published As

Publication number Publication date
JP4382485B2 (ja) 2009-12-16
WO2003037571A1 (de) 2003-05-08
DE10152959B4 (de) 2007-03-15
CN1481297A (zh) 2004-03-10
JP2005519775A (ja) 2005-07-07
CN1304173C (zh) 2007-03-14
EP1441880A1 (de) 2004-08-04
US20040011541A1 (en) 2004-01-22
DE50214766D1 (de) 2010-12-23
DE10152959A1 (de) 2003-05-15
US7028786B2 (en) 2006-04-18

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