EP1642685A1 - Bohr- und/oder Meisselhammer - Google Patents

Bohr- und/oder Meisselhammer Download PDF

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Publication number
EP1642685A1
EP1642685A1 EP05108921A EP05108921A EP1642685A1 EP 1642685 A1 EP1642685 A1 EP 1642685A1 EP 05108921 A EP05108921 A EP 05108921A EP 05108921 A EP05108921 A EP 05108921A EP 1642685 A1 EP1642685 A1 EP 1642685A1
Authority
EP
European Patent Office
Prior art keywords
housing
drill
chisel hammer
hammer
guide 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.)
Withdrawn
Application number
EP05108921A
Other languages
German (de)
English (en)
French (fr)
Inventor
Josef Fünfer
Dirk Schinkitz
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 EP1642685A1 publication Critical patent/EP1642685A1/de
Withdrawn legal-status Critical Current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
    • 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
    • B25D17/06—Hammer pistons; Anvils ; Guide-sleeves for pistons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2211/00—Details of portable percussive tools with electromotor or other motor drive
    • B25D2211/003—Crossed drill and motor spindles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2222/00—Materials of the tool or the workpiece
    • B25D2222/21—Metals
    • B25D2222/24—Aluminium
    • 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
    • B25D2250/121—Housing details

Definitions

  • the invention relates to a drill and / or chisel hammer, referred to in the preamble of claim 1. Art.
  • the motor and the gear are arranged, for example, to protect against external influences in each case in a housing within a device housing of a generic drill and / or chisel hammer.
  • this also comprises a further housing, wherein this housing is usually formed in two parts and has an inner housing or guide tube and a surrounding flange tube. Due to the two-part design, the housing of the percussion on a large installation effort and a high weight.
  • a hydraulic breaker for hydraulically operated excavators and excavators which has a one-piece machine housing made of cast metal.
  • the machine housing comprises a housing or guide tube for the impact mechanism, a housing support and stiffening partitions.
  • a disadvantage of the known solution is that the machine housing has a very high weight and thus is in particular unsuitable for a hand-held drill and / or chisel hammer.
  • the object of the invention is to provide housing for individual components of a particular hand-held drill and / or chisel hammer, which are much cheaper and flexible to manufacture and have a low weight.
  • At least one of the housings is made of an extruded profile.
  • the cross section of the extruded profile is formed and manufactured in a predetermined length as a semi-finished product.
  • Different housing concepts can be realized by different cut to length extruded sections. There are much lower manufacturing and tooling costs than in the known solutions.
  • the cut extruded profile sections with a constant wall thickness on an uninterrupted fiber flow which ensures a long service life and reliability of the housing.
  • the housing made of an extruded profile are recycling-friendly, since a material separation in the disposal of the housing is eliminated.
  • the extruded profile is made of an aluminum alloy. Housing made of these extruded profiles have a low weight in relation to their dimensions.
  • the extruded profile is made of an aluminum alloy according to DIN EN 1706 or DIN EN 755 Part 1-9.
  • the extruded profile is made of a magnesium alloy. Housing from these extruded profiles also have a low weight in relation to their dimensions.
  • the extruded profile is made of a magnesium alloy according to ASTM B107 / B107M or DIN 977-1, -2, -3.
  • a plurality of housings disposed within the device housing of the rotary and / or chisel hammer are manufactured from an extruded profile, all housings made of extruded profiles, which are made of the same material, are advantageously produced, whereby the housings can be connected to one another in a materially bonded manner.
  • all housings can be combined to form a housing group that is easy to install allows and has a low weight.
  • the third housing is rotatably mounted to the first and / or second housing.
  • the first housing for the motor and the second housing for the transmission are formed as a housing unit.
  • This housing block is made of a single, an appropriately trained cross-section extruded profile. With the merger of the first and the second housing, individual wall sections can be saved and thus further reduce the weight of these housings as a whole. By using a single extruded profile sufficient rigidity of the housing unit or the housing block is ensured.
  • At least one cover part is preferably provided on the first housing for the motor and / or on the second housing for the transmission, which protects the motor and / or the transmission arranged inside the housing in a simple manner from external influences.
  • cover parts are provided at both ends of the housing or housing.
  • the necessary openings for supply and discharge of cooling air to the engine and transmission are advantageously provided on the at least one cover part, whereby machining of the extruded profile sections for the housing is eliminated and the manufacturing costs can be kept low.
  • On the extruded profile receptacles for fastening means, such as screws, are further advantageous, which allow easy fixing of the at least one cover part serving as a cover.
  • the at least one cover part is made for example of a light metal or a suitable plastic.
  • the third housing for the striking mechanism is designed as a guide tube, in which at least one striker and / or an exciter piston of the percussion mechanism are displaceably arranged.
  • Different percussion types are realized, for example, by differently cut extruded profiles. With the extruded profile fewer parts are required for the housing of the impact mechanism, which not only significantly affects the total weight, but also reduces the assembly effort.
  • the guide tube for the striking mechanism in the longitudinal direction extending channels, so that it can be dispensed with the arrangement of an additional covering tube, such as a flange.
  • an additional covering tube such as a flange.
  • the guide tube on outwardly directed ribs which additionally supports the heat dissipation by using the cooling air supplied to the drill and / or chisel hammer or the use of the exhaust air from the engine and / or transmission. Both measures individually but especially together ensure that the made of an extruded guide tube for the striking mechanism is exposed to only a slight heat distortion and thus has a sufficiently long service life.
  • the running surfaces of the guide tube are coated so that self-lubricating running surfaces are provided for the components of the striking mechanism arranged in the guide tube.
  • CVD chemical vapor deposition
  • PVD plasma vapor deposition
  • Another possibility is the coating of the running surfaces by means of oxidation.
  • the coating of the running surfaces of a guide tube which is made of an aluminum alloy, carried out by hard anodization.
  • the chisel hammer 1 shown in FIGS. 1 and 2 comprises a device housing 2, a motor 3 arranged in a first housing 11, a transmission 4 arranged in a second housing 12 and a percussion mechanism 5 comprising a third housing 21, all housings 11, 12 and 21 are made of extruded profiles made of aluminum alloy.
  • the first housing 11 and the second housing 12 are formed as a housing unit 13, the housing unit 13 being formed of an extruded section.
  • two cover parts 14, 15 are defined as the conclusion of the end faces of the extruded profile.
  • the third housing 21 is formed as a guide tube 22 in which an anvil 6 and a field piston 7 of the impact mechanism 5 is arranged displaceably.
  • the guide tube 22 has in the longitudinal direction L extending channels 23 and outwardly directed ribs 24. To improve the sliding properties and to increase the strength, the running surfaces 25 of the guide tube 22 are coated in a vacuum coating process.
  • the third housing 21 for the impact mechanism 5 is fixedly connected to the second housing 12 for the transmission 4 or to the housing unit 13, for example by means of a protective gas welding.
  • a bore 16 was provided in a wall of the second housing 12 and the housing unit 13, which opens the second housing 12 to the third housing 21 and allows connection of the excitation piston 7 arranged in the guide tube 22 with the transmission 4 via a connecting rod 8.
  • all housings 11, 12 and 21 form a housing group which has a low weight and allows easy mounting of the chisel hammer 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Earth Drilling (AREA)
EP05108921A 2004-09-30 2005-09-27 Bohr- und/oder Meisselhammer Withdrawn EP1642685A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004047606A DE102004047606A1 (de) 2004-09-30 2004-09-30 Bohr- und/oder Meisselhammer

Publications (1)

Publication Number Publication Date
EP1642685A1 true EP1642685A1 (de) 2006-04-05

Family

ID=35501244

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05108921A Withdrawn EP1642685A1 (de) 2004-09-30 2005-09-27 Bohr- und/oder Meisselhammer

Country Status (4)

Country Link
US (1) US20060065417A1 (ja)
EP (1) EP1642685A1 (ja)
JP (1) JP2006102935A (ja)
DE (1) DE102004047606A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT519589A1 (de) * 2017-01-24 2018-08-15 Fill Gmbh Entkernhammer zum Entkernen von Gusswerkstücken

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0912283D0 (en) 2009-07-15 2009-08-26 Black & Decker Inc Motor driven hammer having means for controlling the power of impact
CN104519813A (zh) * 2010-12-29 2015-04-15 澳擞技术有限责任公司 用于矫形冲击的电机驱动工具
US8393409B2 (en) * 2010-12-29 2013-03-12 Ortho Technologies, Llc Electric motor driven tool for orthopedic impacting
JP2013091117A (ja) * 2011-10-24 2013-05-16 Makita Corp 打撃工具
WO2013178246A1 (de) * 2012-05-29 2013-12-05 Hilti Aktiengesellschaft Brennkraftbetriebenes setzgerät
CN106536091B (zh) * 2014-06-09 2019-07-05 欧姆乐2000有限公司 用于对翻砂铸件除芯的具有铝合金套壳的除芯振动器或气锤
US10814468B2 (en) 2017-10-20 2020-10-27 Milwaukee Electric Tool Corporation Percussion tool
CN214723936U (zh) 2018-01-26 2021-11-16 米沃奇电动工具公司 冲击工具

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3874460A (en) * 1972-10-28 1975-04-01 Bosch Gmbh Robert Impact wrench
US4474077A (en) * 1982-02-01 1984-10-02 Black & Decker Inc. Housing retaining means for portable power tools and method of assembly therefor
EP0731248A1 (de) * 1995-03-10 1996-09-11 Tracto-Technik Paul Schmidt Spezialmaschinen Kg Schlaggerät
EP0759341A2 (en) * 1995-08-18 1997-02-26 Makita Corporation Hammer drill with an idling strike prevention mechanism
US6241500B1 (en) * 2000-03-23 2001-06-05 Cooper Brands, Inc. Double-throw air motor with reverse feature
DE10201895A1 (de) * 2001-01-19 2002-08-14 Hitachi Koki Kk Schlagwerkzeug
EP1323501A2 (en) * 2001-12-27 2003-07-02 Black & Decker Inc. Combined fastenerless motor end cap and output device mounting
US20030137114A1 (en) * 2000-09-08 2003-07-24 Otto Baumann Tool mounting for a hand machine tool
US20040000414A1 (en) * 2002-04-11 2004-01-01 Karl Echtler Method of manufacturing a percussion mechanism of a hand-held power tool
DE10357758A1 (de) * 2003-12-10 2005-07-21 Wacker Construction Equipment Ag Aufbruch- und/oder Bohrhammer mit linear geführter Griffeinrichtung

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2136523C3 (de) * 1971-07-21 1983-11-03 Hilti AG, 9494 Schaan Elektrobohrhammer
DE2242944B2 (de) * 1972-08-31 1981-04-23 Robert Bosch Gmbh, 7000 Stuttgart Bohrhammer
DE2449191C2 (de) * 1974-10-16 1988-03-24 Robert Bosch Gmbh, 7000 Stuttgart Hammer
US4114699A (en) * 1976-01-22 1978-09-19 Licentia Patent-Verwaltungs-Gmbh Pneumatic rotary hammer device
DE2728961C2 (de) * 1977-06-27 1991-08-08 Hilti Ag, Schaan Bohrhammer mit arretierbarem Werkzeughalter
ZA803409B (en) * 1979-06-18 1981-05-27 Kango Electric Hammers Ltd Hammer drill
US4384622A (en) * 1979-11-16 1983-05-24 Peter Koziniak Impact wrench with linear motion hammer adapter
EP0048482B1 (en) * 1980-09-22 1984-10-17 Black & Decker Inc. Rotary percussive drill
DE3329005A1 (de) * 1983-08-11 1985-02-28 Robert Bosch Gmbh, 7000 Stuttgart Bohrhammer
DE3516494A1 (de) * 1985-05-08 1986-11-13 Hilti Ag, Schaan Bohrhammer
DE3718804A1 (de) * 1987-06-05 1988-12-15 Gardner Denver Gmbh Schrauber
DE8809892U1 (ja) * 1988-08-03 1989-12-07 Robert Bosch Gmbh, 7000 Stuttgart, De
US4991472A (en) * 1988-11-04 1991-02-12 James Curtis Hilliard D.C. direct drive impact wrench
US6044917A (en) * 1996-03-18 2000-04-04 Brunhoelzl; George Pneumatic tool with side exhaust
DE10034359A1 (de) * 2000-07-14 2002-01-24 Hilti Ag Schlagendes Elektrohandwerkzeuggerät
GB0121947D0 (en) * 2001-09-12 2001-10-31 Black & Decker Inc Tool holder for hammer
EP1302281B1 (de) * 2001-10-15 2007-05-02 HILTI Aktiengesellschaft Kühlluftleitung für ein Elektrohandwerkzeuggerät mit elektropneumatischem Schlagwerk
US6557649B1 (en) * 2001-12-03 2003-05-06 Shu Yi Yang Pneumatic tool structure
DE10160864A1 (de) * 2001-12-12 2003-06-26 Hilti Ag Axial schlagendes Elektrohandwerkzeuggerät

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3874460A (en) * 1972-10-28 1975-04-01 Bosch Gmbh Robert Impact wrench
US4474077A (en) * 1982-02-01 1984-10-02 Black & Decker Inc. Housing retaining means for portable power tools and method of assembly therefor
EP0731248A1 (de) * 1995-03-10 1996-09-11 Tracto-Technik Paul Schmidt Spezialmaschinen Kg Schlaggerät
EP0759341A2 (en) * 1995-08-18 1997-02-26 Makita Corporation Hammer drill with an idling strike prevention mechanism
US6241500B1 (en) * 2000-03-23 2001-06-05 Cooper Brands, Inc. Double-throw air motor with reverse feature
US20030137114A1 (en) * 2000-09-08 2003-07-24 Otto Baumann Tool mounting for a hand machine tool
DE10201895A1 (de) * 2001-01-19 2002-08-14 Hitachi Koki Kk Schlagwerkzeug
EP1323501A2 (en) * 2001-12-27 2003-07-02 Black & Decker Inc. Combined fastenerless motor end cap and output device mounting
US20040000414A1 (en) * 2002-04-11 2004-01-01 Karl Echtler Method of manufacturing a percussion mechanism of a hand-held power tool
DE10357758A1 (de) * 2003-12-10 2005-07-21 Wacker Construction Equipment Ag Aufbruch- und/oder Bohrhammer mit linear geführter Griffeinrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT519589A1 (de) * 2017-01-24 2018-08-15 Fill Gmbh Entkernhammer zum Entkernen von Gusswerkstücken

Also Published As

Publication number Publication date
JP2006102935A (ja) 2006-04-20
DE102004047606A1 (de) 2006-04-06
US20060065417A1 (en) 2006-03-30

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