EP1281483A3 - Rotary hammer - Google Patents

Rotary hammer Download PDF

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Publication number
EP1281483A3
EP1281483A3 EP01118236A EP01118236A EP1281483A3 EP 1281483 A3 EP1281483 A3 EP 1281483A3 EP 01118236 A EP01118236 A EP 01118236A EP 01118236 A EP01118236 A EP 01118236A EP 1281483 A3 EP1281483 A3 EP 1281483A3
Authority
EP
European Patent Office
Prior art keywords
crank
drive motor
bevel gear
crank wheel
drive
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
EP01118236A
Other languages
German (de)
French (fr)
Other versions
EP1281483B1 (en
EP1281483A2 (en
Inventor
Roland Vögele
Rainer Kumpf
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.)
Techtronic Industries GmbH
Original Assignee
Atlas Copco Electric 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 Atlas Copco Electric Tools GmbH filed Critical Atlas Copco Electric Tools GmbH
Priority to EP20010118236 priority Critical patent/EP1281483B1/en
Priority to DE50113888T priority patent/DE50113888D1/en
Publication of EP1281483A2 publication Critical patent/EP1281483A2/en
Publication of EP1281483A3 publication Critical patent/EP1281483A3/en
Application granted granted Critical
Publication of EP1281483B1 publication Critical patent/EP1281483B1/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
    • B25D16/00—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
    • 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

Landscapes

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

Abstract

Die Erfindung betrifft einen Bohrhammer (1) mit einer drehbaren Werkzeugspindel (2) zur Aufnahme eines Werkzeuges (3). Der Bohrhammer (1) weist einen Antriebsmotor (4) sowie ein auf das Werkzeug (3) wirkendes, in einem Getriebegehäuse (5) gelagertes Schlagwerk (6) auf. Das Schlagwerk (6) umfasst einen Kurbeltrieb (7) mit einem Kurbelrad (8), welches eine Kurbelradnabe (10) und einen Kurbelzapfen (11) aufweist. Zwischen der Kurbelradnabe (10) und dem Antriebsmotor (4) ist ein Antrieb (12) vorgesehen, über den der Antriebsmotor (4) auf den Kurbeltrieb (7) wirkt. Der Antrieb (12) besteht aus einem an der Kurbelradnabe (10) festgelegten Kegelrad (15) und einem in das Kegelrad (15) eingreifenden Kegelritzel (16). Die Drehachsen (17, 18) des Kegelrades (15) bzw. des Kegelritzels (16) stehen winklig und insbesondere in einem rechten Winkel zueinander. Das Kurbelrad (8) ist mittels eines radialen Wellenlagers (20) längsverschieblich fliegend gelagert, wobei die Längsverschieblichkeit in eine Richtung durch ein Axiallager (21) und in der entgegengesetzten Richtung durch das Kegelritzel (16) begrenzt ist.

Figure 00000001
The invention relates to a rotary hammer (1) with a rotatable tool spindle (2) for receiving a tool (3). The hammer drill (1) has a drive motor (4) and a percussion mechanism (6) which acts on the tool (3) and is mounted in a gearbox (5). The striking mechanism (6) comprises a crank mechanism (7) with a crank wheel (8), which has a crank wheel hub (10) and a crank pin (11). Between the Kurbelradnabe (10) and the drive motor (4), a drive (12) is provided, via which the drive motor (4) acts on the crank mechanism (7). The drive (12) consists of a bevel gear (15) fixed to the crank wheel hub (10) and a bevel pinion (16) engaging in the bevel gear (15). The axes of rotation (17, 18) of the bevel gear (15) and the bevel pinion (16) are at an angle and in particular at a right angle to each other. The crank wheel (8) is longitudinally displaceably mounted in a longitudinally displaceable manner by means of a radial shaft bearing (20), the longitudinal displaceability being limited in one direction by a thrust bearing (21) and in the opposite direction by the bevel pinion (16).
Figure 00000001
EP20010118236 2001-07-30 2001-07-30 Rotary hammer Expired - Lifetime EP1281483B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20010118236 EP1281483B1 (en) 2001-07-30 2001-07-30 Rotary hammer
DE50113888T DE50113888D1 (en) 2001-07-30 2001-07-30 Rotary Hammer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20010118236 EP1281483B1 (en) 2001-07-30 2001-07-30 Rotary hammer

Publications (3)

Publication Number Publication Date
EP1281483A2 EP1281483A2 (en) 2003-02-05
EP1281483A3 true EP1281483A3 (en) 2003-03-05
EP1281483B1 EP1281483B1 (en) 2008-04-23

Family

ID=8178162

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010118236 Expired - Lifetime EP1281483B1 (en) 2001-07-30 2001-07-30 Rotary hammer

Country Status (2)

Country Link
EP (1) EP1281483B1 (en)
DE (1) DE50113888D1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007062248A1 (en) 2007-12-21 2009-06-25 Robert Bosch Gmbh Hand tool with a, at least one rotatably mounted intermediate shaft comprehensive gear device
US11858100B2 (en) * 2021-04-07 2024-01-02 Milwaukee Electric Tool Corporation Impact power tool

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2638325A (en) * 1947-12-29 1953-05-12 Joy Mfg Co Drilling apparatus
DE2335924A1 (en) * 1973-07-14 1975-02-06 Bosch Gmbh Robert Portable power tool with operating hours indicator - has wearing pin spring-loaded against rotary slipring
DE2743153A1 (en) * 1977-09-24 1979-04-05 Impex Essen Vertrieb Motor-driven percussion tool - has motor pinion-driven crank disc seated on axial and radial roller bearings in motor housing
EP0042010A1 (en) * 1980-06-12 1981-12-23 Black & Decker Inc. Power operated tool including a mechanism for converting rotary motion to reciprocatory motion
US4712625A (en) * 1986-01-14 1987-12-15 Willy Kress Drilling and percussion hammer
GB2191971A (en) * 1986-06-25 1987-12-31 Bosch Gmbh Robert Powered hand tool, in particular a hammer drill and/or percussion hammer
DE3936849A1 (en) * 1989-11-06 1991-05-08 Bosch Gmbh Robert ELECTRICALLY DRIVED MACHINE TOOL
US6176321B1 (en) * 1998-09-16 2001-01-23 Makita Corporation Power-driven hammer drill having an improved operating mode switch-over mechanism

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2638325A (en) * 1947-12-29 1953-05-12 Joy Mfg Co Drilling apparatus
DE2335924A1 (en) * 1973-07-14 1975-02-06 Bosch Gmbh Robert Portable power tool with operating hours indicator - has wearing pin spring-loaded against rotary slipring
DE2743153A1 (en) * 1977-09-24 1979-04-05 Impex Essen Vertrieb Motor-driven percussion tool - has motor pinion-driven crank disc seated on axial and radial roller bearings in motor housing
EP0042010A1 (en) * 1980-06-12 1981-12-23 Black & Decker Inc. Power operated tool including a mechanism for converting rotary motion to reciprocatory motion
US4712625A (en) * 1986-01-14 1987-12-15 Willy Kress Drilling and percussion hammer
GB2191971A (en) * 1986-06-25 1987-12-31 Bosch Gmbh Robert Powered hand tool, in particular a hammer drill and/or percussion hammer
DE3936849A1 (en) * 1989-11-06 1991-05-08 Bosch Gmbh Robert ELECTRICALLY DRIVED MACHINE TOOL
US6176321B1 (en) * 1998-09-16 2001-01-23 Makita Corporation Power-driven hammer drill having an improved operating mode switch-over mechanism

Also Published As

Publication number Publication date
EP1281483B1 (en) 2008-04-23
EP1281483A2 (en) 2003-02-05
DE50113888D1 (en) 2008-06-05

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