EP1984149A1 - Outil manuel motorise, en particulier foreuse a percussion et/ou marteau-piqueur - Google Patents

Outil manuel motorise, en particulier foreuse a percussion et/ou marteau-piqueur

Info

Publication number
EP1984149A1
EP1984149A1 EP06830497A EP06830497A EP1984149A1 EP 1984149 A1 EP1984149 A1 EP 1984149A1 EP 06830497 A EP06830497 A EP 06830497A EP 06830497 A EP06830497 A EP 06830497A EP 1984149 A1 EP1984149 A1 EP 1984149A1
Authority
EP
European Patent Office
Prior art keywords
motor
motor shaft
unit
hand tool
tool according
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Withdrawn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
EP06830497A
Other languages
German (de)
English (en)
Inventor
Gerhard Meixner
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 EP1984149A1 publication Critical patent/EP1984149A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • B25D2211/00—Details of portable percussive tools with electromotor or other motor drive
    • B25D2211/003—Crossed drill and motor spindles

Definitions

  • Hand tool in particular drill and / or chisel hammer
  • the invention relates to a hand tool according to the preamble of claim 1.
  • DE 102 59 566 A1 discloses a hand tool machine formed by a chisel hammer with a motor formed by an electric motor and with a motor shaft and a percussion unit drivable by the motor for achieving a pulse in the direction of a striking axis.
  • the striking mechanism unit comprises an axial drive unit formed by an eccentric unit with a driven means formed by an eccentric pin.
  • the handheld power tool comprises a transmission unit formed by a connecting rod, which is provided for transmitting a driving force from the axial drive unit to a piston unit.
  • the transmission unit and the motor shaft are, viewed in the longitudinal direction of the striking axis, arranged at a distance.
  • the invention relates to a hand tool, in particular a drill and / or chisel, with a motor and a motor shaft, with a drivable by the motor percussion unit to obtain a pulse in the direction of a striking axis having an axial drive unit with a driven means, and with a transmission unit which is provided for transmitting a driving force from the Axialan- drive unit to a piston unit.
  • an "axial drive unit” is to be understood in particular as a unit which is intended to convert a rotational movement into an axial movement, such as a cam mechanism and / or particularly advantageously an eccentric unit, which can be realized in a structurally simple, space-saving and robust manner.
  • An "output means” is to be understood as a means which, in particular by its shape and / or in particular by its arrangement, effects at least part of a conversion of the rotational movement into the axial movement, such as, in particular, an eccentric pin or a cam with a correspondingly eccentric shape etc., and which forms an interface to the transmission unit, which is provided for transmitting a driving force from the axial drive unit to a piston unit, such as in particular a connecting rod unit and / or a pushing unit, which is guided on a curved path of the A xialantriebsaku.
  • the transmission unit has a recess through which the motor shaft passes, so that the motor shaft in particular passes past two parts of the transmission unit opposite the impact axis, an advantageous, in particular at least substantially symmetrical power transmission can be achieved by means of the transmission unit. In principle, however, it would also be conceivable that the motor shaft passes only on one side of the transmission unit.
  • the eccentric unit viewed in the longitudinal direction of the motor shaft, is mounted at least on a side facing away from the motor and in particular at least partially on a side of an output region of the motor shaft facing away from the motor and / or if the eccentric unit is mounted on one side , in particular in each case based on a driven means of the eccentric unit, such as an eccentric pin, an eccentric cam, etc.
  • an “output range" of the motor shaft is to be understood in particular either a coupling point with a motor pinion or a motor pinion itself.
  • the handheld power tool has an idler gear for rotational drive of a tool mount, which, viewed in the longitudinal direction of the motor shaft, at least partially rests on one of the movers.
  • Tor facing away from the axis of the percussion axis and is preferably arranged on a side facing away from the engine output shaft of the motor shaft the rotary drive of the tool holder can be realized to save space, especially if the idler, viewed in the longitudinal direction of the striking axis, at least partially on the Tool holder facing side of the motor shaft is arranged, whereby preferably a directly driven by the motor shaft motor pinion advantageously pelt coupled directly to the intermediate gear and thus can be used in particular for the direct drive of at least two gear wheels simultaneously.
  • intermediate is meant in particular an arrangement without the interposition of other intermediate wheels, but should in particular be arrangements that have at least in operation firmly coupled intermediate components with the motor pinion and / or with the motor shaft.
  • an advantageously space-saving rotary drive can be realized structurally simple in particular with a desired gear ratio, if the hand tool has an intermediate wheel for rotational drive of a tool holder, which is directly coupled to a driven means of the axial drive unit.
  • Fig. 1 is a schematic longitudinal section through an educated by a chisel hammer
  • FIG. 1a shows a detail of a schematically illustrated section along the line 1a-1a in FIG. 1
  • FIG. 2 shows a schematic longitudinal section through a hand-held power tool formed by a hammer
  • FIG. 3 shows a schematic longitudinal section through an alternative formed by a hammer drill hand tool.
  • FIG. 1 shows a schematic longitudinal section through a hand tool machine formed by a chisel hammer with a motor 10a formed by an electric motor and with a motor shaft 12a and a percussion unit 14a driven by the motor 10a via the motor shaft 12a to generate a pulse in the direction of a striking axis 16a
  • the percussion unit 14a has one of an eccentric unit formed axial drive unit 18a with a driven means 20a formed by an eccentric pin.
  • the axial drive unit 18a has a toothed wheel 58a, which meshes with a motor pinion 32a formed on the motor shaft 12a and to which the output means 20a is arranged directly on a side facing the motor 10a.
  • the output means 20a as seen in the longitudinal direction of the motor shaft 12a, are arranged substantially on the side of the motor pinion 32a facing the motor 10a and an output portion 28a of the motor shaft 12a formed by the motor pinion 32a.
  • the hammer mechanism unit 14a has a transmission unit 22a, which is provided for transmitting a drive force from the output means 20a of the axial drive unit 18a to a piston unit 24a or to a piston 38a guided in a hammer tube 36a.
  • the transmission unit 22a is essentially formed by a connecting means 40a designed as a connecting rod and has connecting points 42a, 44a formed by connecting rods that are advantageously offset, or the articulation points 42a, 44a or their centers 46a, 48a formed by the connecting rods
  • a distance 50a which preferably corresponds to at least half the extent of a pivot point 42a, 44a, viewed in the longitudinal direction of the motor shaft 12a, corresponds.
  • the transmission means 40a essentially comprises two 45 ° deflections 52a, 54a and a partial region 56a running obliquely to the striking axis 16a.
  • the transmission means 40a it would also be conceivable for the transmission means 40a to be perpendicular to the motor shaft 12a and / or, in the illustrated side view considered coaxially and / or axially parallel to the impact axis 16a is formed.
  • the hand tool has a so-called L-type construction, in which the motor shaft 12a encloses an angle 74a of 90 ° to the striking axis 16a.
  • the skilled person appear useful, non-zero angle conceivable, in particular angles between 30 ° and 150 °, with a coaxial or axially parallel alignment of the motor shaft 12a to the striking axis 16a is to be regarded as an angle of zero.
  • the transmission means 40a of the transmission unit 22a has a recess 26a, through which the motor shaft 12a passes and thus, viewed in the longitudinal direction of the striking axis 16a, passes laterally past two opposing parts of the transmission unit 22a in the region of the transmission unit 22a (FIGS and Ia).
  • the recess 26a is dimensioned in such a way that contact between the motor shaft 12a and the transmission means 40a is always avoided.
  • the eccentric unit viewed in the longitudinal direction of the motor shaft 12a, is mounted on one side on a side of the gearwheel 58a facing away from the motor 10a and on a side of the output shaft 28a of the motor shaft 12a which is remote from the motor 10a and of the motor gearwheel 32a formed on the motor shaft 12a. Furthermore, the motor shaft 12a is also mounted on the side of the output region 28a facing away from the motor 10a.
  • FIGS. 2 and 3 show alternative embodiments. Substantially identical components, features and functions are basically numbered by the same reference numerals. To distinguish the exemplary embodiments, however, the letters a, b and c are added to the reference numerals of the exemplary embodiments. The following description is essentially limited to the differences from the exemplary embodiment in FIG. 1, it being possible to refer to the description of the exemplary embodiment in FIG. 1 with regard to components, features and functions remaining the same.
  • FIG. 2 shows a schematic longitudinal section through a hand tool machine formed by a rotary hammer with a motor 10b formed by an electric motor and with a motor shaft 12b and a percussion unit 14b driven by the motor 10b via the motor shaft 12b to obtain a pulse in the direction of a striking axis 16b
  • the impact mechanism unit 14b has an axial drive unit 18b formed by an eccentric unit with a driven means 20b formed by an eccentric pin.
  • the axial drive unit 18b has a toothed wheel 58b which meshes with a motor pinion 32b formed on the motor shaft 12b and to which a shaft 60b is arranged on a side facing the motor 10b and which is connected to an eccentric disk of the eccentric unit on a side facing the motor 10b is, on whose side facing the motor 10b directly arranged by the eccentric driven means 20b is arranged.
  • the axial drive unit 18b viewed in the longitudinal direction of the shaft 60b, is mounted on the side of the eccentric disk facing away from the motor 10b before and after the gearwheel 58b.
  • the Motor shaft 12b is mounted on the side facing away from the motor 10b of the motor pinion 32b, but could also be additionally or alternatively mounted on the motor 10b side facing the motor pinion 32b and on the side facing away from the motor 10b of the Ubertragungsaku 22b, as shown in Figure 2 is indicated.
  • the motor 10b is separated from the hammer mechanism unit 14b by means of a partition wall 66b and a seal 68b arranged in the partition wall 66b, and thus protected from lubricant.
  • the motor pinion 32b also meshes directly with an intermediate wheel 30b of the hand tool machine, which is provided for the rotary drive of a tool holder 72b and which, viewed in the longitudinal direction of the motor shaft 12b, is arranged on a side of the striking shaft 16b facing away from the motor 10b.
  • the intermediate gear 30b viewed in the longitudinal direction of the striking axis 16b, is arranged on the side of the motor shaft 12b facing the tool holder 72b, wherein the tool holder 72b is arranged in an end region of a hammer tube 36b facing away from the motor shaft 12b.
  • FIG. 3 shows an alternative hand tool machine formed by a hammer drill, which essentially corresponds to the hand tool machine in FIG. 2, so that reference can be made in particular to the description of the exemplary embodiment in FIG. 2 with respect to the hand tool machine in FIG.
  • the portable power tool has an intermediate gear 30c for rotationally driving a tool holder 72c, which is coupled directly to or meshes with a driven means 34c of an axial drive unit 18c formed by a cam unit.
  • the output means 34c of the axial drive unit 18c is arranged on a side of a gearwheel 58c of the axial drive unit 18c facing away from a motor 10c, which meshes directly with a motor pinion 32c formed on a motor shaft 12c.
  • the intermediate gear 30c is non-rotatably mounted on a shaft 70c, at whose end facing a hammer tube 36c a bevel gear 62c is arranged, which meshes with a partial wheel 64c integrally formed on the hammer tube 36c.

Landscapes

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

Abstract

L'invention concerne un outil manuel motorisé, en particulier une foreuse à percussion et/ou un marteau-piqueur, qui présente un moteur (10a, 10b, 10c) ainsi qu'un arbre moteur (12a, 12b, 12c), un mécanisme de percussion (14a, 14b, 14c) entraîné par le moteur (10a, 10b, 10c), pour obtenir une impulsion dans la direction d'un axe de percussion (16a, 16b, 16c) et qui présente une unité d'entraînement axial (18a, 18b, 18c) et un moyen entraîné (20a, 20b, 20c), ainsi qu'une unité de transmission (22a, 22b, 22c) prévue pour transmettre une force d'entraînement de l'unité d'entraînement axial (18a, 18b, 18c) à une unité de piston (24a, 24b, 24c). On propose selon l'invention de faire passer l'arbre moteur (12a, 12b, 12c) suivant la longueur de l'axe de percussion (16a, 16b, 16c), latéralement sur au moins une partie de l'unité de transmission (22a, 22b, 22c) dans la zone de l'unité de transmission (22a, 22b, 22c).
EP06830497A 2006-02-09 2006-12-11 Outil manuel motorise, en particulier foreuse a percussion et/ou marteau-piqueur Withdrawn EP1984149A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006005852A DE102006005852A1 (de) 2006-02-09 2006-02-09 Handwerkzeugmaschine, insbesondere Bohr- und/oder Meißelhammer
PCT/EP2006/069522 WO2007090478A1 (fr) 2006-02-09 2006-12-11 Outil manuel motorise, en particulier foreuse a percussion et/ou marteau-piqueur

Publications (1)

Publication Number Publication Date
EP1984149A1 true EP1984149A1 (fr) 2008-10-29

Family

ID=37814172

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06830497A Withdrawn EP1984149A1 (fr) 2006-02-09 2006-12-11 Outil manuel motorise, en particulier foreuse a percussion et/ou marteau-piqueur

Country Status (5)

Country Link
US (1) US20080149359A1 (fr)
EP (1) EP1984149A1 (fr)
CN (1) CN101365564A (fr)
DE (1) DE102006005852A1 (fr)
WO (1) WO2007090478A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007000393A1 (de) * 2007-07-19 2009-01-22 Hilti Aktiengesellschaft Handwerkzeugmaschine mit pneumatischem Schlagwerk
EP2857149A1 (fr) * 2013-10-03 2015-04-08 HILTI Aktiengesellschaft Machine-outil manuelle
US10814468B2 (en) 2017-10-20 2020-10-27 Milwaukee Electric Tool Corporation Percussion tool
WO2019147919A1 (fr) 2018-01-26 2019-08-01 Milwaukee Electric Tool Corporation Outil à percussion

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE20365E (en) * 1937-05-18 Portable power hammer
US1595064A (en) * 1922-04-10 1926-08-10 Bulkrug Machine Corp Power-transmitting mechanism
DE736794C (de) * 1935-04-14 1943-06-28 Siemens Ag Schlagwerkzeug mit Kurbeltrieb
US2306600A (en) * 1940-01-22 1942-12-29 Edward B George Impacting tool
US2873735A (en) * 1956-07-13 1959-02-17 Peugeot & Cie Soc Electric hammer
GB1210006A (en) * 1967-07-24 1970-10-28 Hilti Ag Motor-powered hammer drill
GB1195505A (en) * 1967-07-31 1970-06-17 Hilti Ag Hammer Drill
US4095654A (en) * 1976-11-15 1978-06-20 Ross Frederick W Impact device with multiple connecting rods and gearing
US4436163A (en) * 1978-12-13 1984-03-13 Black & Decker Inc. Arrangement for converting rotary motion to reciprocatory motion
DE4227288A1 (de) * 1992-08-18 1994-02-24 Bosch Gmbh Robert Bohrhammer
DE29800248U1 (de) * 1998-01-09 1999-05-06 Robert Bosch Gmbh, 70469 Stuttgart Bohr- und/oder Schlaghammer
DE10034795A1 (de) * 2000-07-18 2002-02-21 Hilti Ag Elektrohandwerkzeuggerät mit elektropneumatischen Schlagwerk
DE10259566A1 (de) * 2002-12-19 2004-07-01 Hilti Ag Schlagende Elektrohandwerkzeugmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007090478A1 *

Also Published As

Publication number Publication date
US20080149359A1 (en) 2008-06-26
WO2007090478A1 (fr) 2007-08-16
CN101365564A (zh) 2009-02-11
DE102006005852A1 (de) 2007-08-23

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