WO2007073955A1 - Machine-outil tenue à la main, en particulier marteau perforateur et/ou burineur - Google Patents

Machine-outil tenue à la main, en particulier marteau perforateur et/ou burineur Download PDF

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Publication number
WO2007073955A1
WO2007073955A1 PCT/EP2006/067846 EP2006067846W WO2007073955A1 WO 2007073955 A1 WO2007073955 A1 WO 2007073955A1 EP 2006067846 W EP2006067846 W EP 2006067846W WO 2007073955 A1 WO2007073955 A1 WO 2007073955A1
Authority
WO
WIPO (PCT)
Prior art keywords
unit
hand tool
tool according
eccentric
motor
Prior art date
Application number
PCT/EP2006/067846
Other languages
German (de)
English (en)
Inventor
Gerhard Meixner
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 WO2007073955A1 publication Critical patent/WO2007073955A1/fr

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
    • 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
    • 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
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0015—Tools having a percussion-only mode
    • 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
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0023—Tools having a percussion-and-rotation mode
    • 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
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0038—Tools having a rotation-only mode
    • 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
    • B25D2250/065—Details regarding assembling of the tool
    • 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
    • B25D2250/091—Electrically-powered tool components
    • B25D2250/095—Electric motors

Definitions

  • Hand tool in particular drill and / or chisel hammer
  • the invention relates to a hand tool, in particular a drill and / or chisel hammer, according to the preamble of claim 1.
  • EP 1 238 759 B1 discloses a generic hand-held power tool, namely a chipping hammer, having a hammer mechanism unit which has a transfer unit formed by a connecting rod which is used to transfer a drive force from an axial drive unit formed by an eccentric to a piston unit having.
  • the connecting rod is rectilinear, runs parallel to a striking axis of the percussion unit and has at a high level, ie perpendicular to the impact axis or direction of movement of a piston of the piston unit and parallel to bearing axes of the percussion unit and in particular parallel to a motor shaft, formed by connecting rods Anschstellen on , Advantages of the invention
  • the invention relates to a hand tool, in particular a drill and / or chisel hammer, with a percussion werktician having a transmission unit, which is provided for transmitting a driving force from an axial drive unit to a piston unit.
  • connection points arranged at a higher offset are connection points arranged at a higher offset.
  • "high offset” is to be understood in particular a distance in a direction that is unequal to an axial direction or a direction of impact and in the direction of a bearing axis of the power tool, as particularly preferably in the direction of a motor axis or a rotation axis of a motor shaft, if this to a Impact axis includes an angle other than zero.
  • the distance between the articulation points or between centers of the articulation points is preferably greater than half the longitudinal extent of at least one articulation point and particularly preferably greater than a total longitudinal extent of a articulation point.
  • an "axial drive unit” is to be understood in particular as meaning a unit which converts a rotational movement into an axial movement, such as in particular a swash bearing or an eccentric etc.
  • a "pivot point” should be understood to mean, in particular, a point via which the transmission unit communicates with the Axialantriebsaku is coupled, and a point via which the transmission unit is coupled to the piston unit.
  • Highly offset articulated points can be achieved in a structurally simple and cost-effective manner if the transfer unit has at least one deflection means with at least one angling, in particular a height difference, and / or if the transmission unit has at least one transmission means, which in at least a partial area is a height difference having effect, extending obliquely to a striking axis alignment.
  • the transmission means has at least one bend
  • the transmission means is preferably formed in a region of the bend with a reinforcement, whereby increased loads in the region of the bend can be advantageously taken into account.
  • the reinforcement may be formed by an increased material thickness and / or width and / or may also be formed by one or more struts or other constructive embodiments that appear appropriate to the person skilled in the art.
  • a large height offset can be achieved structurally and a high degree of design flexibility can be achieved, in particular if the transmission unit has a pusher unit and a connecting rod unit.
  • a "thrust unit” is to be understood as a unit which essentially carries out a purely axial movement and is articulated on the piston unit, and under a "connecting rod unit” a unit which, in addition to an axial movement, has a compensating unit. movement, in the first place a pivoting movement, executes and is articulated on the axial drive unit.
  • the solution according to the invention can be used in all hand-held power tools that appear suitable to the person skilled in the art, but particularly advantageously in hand-held power tools which have a motor with a motor axis which encloses an angle not equal to zero, preferably greater than 30 ° and particularly preferably greater than 45 °, to the striking axis. so that the motor can be integrated to save space, especially for particularly powerful hand tool machines.
  • the axial drive unit comprises an eccentric, high powers can be transferred in a structurally simple and cost-effective manner.
  • the eccentric is mounted at least on a side facing away from the engine.
  • a side facing away from the engine should be understood to mean that a bearing of the eccentric in the direction of a motor axis or a rotational axis of a motor shaft, starting from the engine, at least partially behind a starting point of the eccentric, in particular behind an eccentric is.
  • a space optimization can be achieved and space can be saved, in particular if the eccentric is mounted only on one side, in particular based on a driven means of the eccentric, such as an eccentric, an eccentric cam, etc.
  • the power tool has a ball head bearing at at least one point of articulation of the transmission unit, whereby unwanted tension can advantageously be easily avoided.
  • FIG. 4 a schematically illustrated longitudinal section through an alternative hand tool with an eccentric mounted on a side facing away from the motor
  • Fig. 5 is a schematically illustrated longitudinal section through an alternative hand tool with a multi-part Ubertragungsaku and
  • Fig. 6 is a detail of a plan view of a
  • Figure 1 shows a schematic longitudinal section through a chisel hammer with a percussion unit 10a, which has a transmission unit 12a, which provided for transmitting a driving force from an eccentric formed by an axial drive unit 14a to a piston unit 16a and to a guided in a hammer tube 48a piston 50a is.
  • the transmission unit 12a is essentially formed by a connecting means 22a designed as a connecting rod and has connecting points 18a, 20a formed by connecting rods or have the articulation points 18a, 20a or their centers 42a, 44a, which are formed by the connecting rods, in the direction of a motor axis 34a or a rotational axis of a motor shaft 40a of an electric motor 32a has a spacing 46a, which preferably corresponds to at least half the extent of a pivot point 18a, 20a in the direction of the motor axis 34a.
  • the chipping hammer has a so-called L-type construction, in which the motor shaft 34a encloses an angle of 90 ° to a striking axis 26a.
  • the transmission means 22a is in the piston unit 16a facing pivot point 18a via a ball head bearing 36a coupled with the piston 50a and in the axial drive unit 14a facing pivot point 20a via a not-shown radial ball bearing with an eccentric pin 54a of the eccentric.
  • the eccentric has a spur gear 52a meshing with the motor shaft 40a, on the side of the eccentric pin 54a facing away from the electric motor 32a.
  • the eccentric is mounted on one side relative to the eccentric pin 54a or relative to the spur gear 52a on a side facing the electric motor 32a.
  • the transmission means 22a has two opposite angled portions 24a, 24a ', each with approximately 45 °, so that the transmission means 22a between the angled portions 24a, 24a' extend obliquely to the striking axis 26a and have a substantially S-shaped side contour having.
  • FIG. 2 shows individual parts of a percussion unit 10b of an alternative chisel hammer.
  • the impact mechanism unit 10b has a transmission unit 12b which is adapted to transmit a drive force from an axial movement formed by an eccentric.
  • drive unit 14b is provided to a piston unit 16b and to a guided in a hammer tube piston 50b.
  • the transmission unit 12b is essentially formed by a transmission means 22b in the form of a connecting rod and has highly staggered articulation points 18b, 20b formed by connecting-rod eyes.
  • the transmission means 22b has two opposite bends 24b, 24b ', each about 90 °, wherein a height difference or a distance 46b in the direction of a motor axis 34b essentially by the length of a perpendicular to a striking axis 26b and parallel to the motor axis 34a extending, around an axis parallel to the motor axis 34b extending axis curved intermediate stub 38b between the angled portions 24b, 24b 'of the transmission means 22b is determined ( Figures 2 and 3).
  • the transmission means 22b has an increasing width up to the angled portions 24b, 24b ', so that the greatest width 56b of the transmission means 22b adjusts in the region of the angled portions 24b, 24b' and thus a reinforcement. Furthermore, the intermediate piece 38b in the area of the striking axis 26b has its greatest strength 58b, which decreases perpendicular to the motor axis 34b and perpendicular to the striking axis 26b or transverse to the striking axis 26b.
  • FIG. 4 shows a schematic longitudinal section through an alternative chipping hammer with a percussion unit 10c, which has a transfer unit 12c, which transmits a driving force from an axial drive unit 14c formed by an eccentric to a piston unit 16c or to a hammer tube 48c Piston 50c is provided.
  • the transmission unit 12c is essentially formed by a connecting rod 22c in the form of a connecting rod, and has connecting points 18c, 20c formed by connecting rods, or points of articulation 18c, 20c formed by the connecting rods or their centers 42c, 44c in the direction of one Motor axis 34c and a rotational axis of a motor shaft 40c of an electric motor 32c has a distance 46c.
  • the chipping hammer has a so-called L-type construction, in which the motor shaft 34c encloses an angle of 90 ° to a striking axis 26c.
  • the electric motor 32c is disposed in a motor housing 60c that connects to a gear housing 62c toward the axial drive unit 14c and to a hammer tube housing 64c toward the piston unit 16c.
  • the motor shaft 40c protrudes in both directions beyond a laminated core of the electric motor 32c and is mounted at an end remote from the eccentric in the motor housing 60c and at an end facing the eccentric in the gear housing 62c, starting from the electric motor 32c in the axial direction of the motor axis 34c behind a combing with the motor shaft 40c spur gear 52c of the eccentric.
  • the motor housing 60c has, in the direction of the gear housing 62c, an intermediate cover 66c with a recess 68c through which the motor shaft 40c passes.
  • In the recess 68c is one between the Mo- toroidal shaft 40c and the intermediate cap 66c sealing gasket 70c arranged by means of an engine compartment in the motor housing 60c is sealed against a gear chamber in the gear housing 62c.
  • the eccentric is mounted on one side facing away from the electric motor 32c side in the gear housing 62c, while on the electric motor 32c facing side of the spur gear 52c of the eccentric pin 54c is arranged.
  • the transmission means 22c essentially has, starting from the articulation point 20c facing the axial drive unit 14c up to the articulation point 18c facing the piston unit 16c, an orientation which results in a height difference between the articulation points 18c, 20c and extends obliquely to the striking axis 26c.
  • FIG. 5 shows a schematic longitudinal section through an alternative chisel hammer with a percussion unit 10d, which has a transfer unit 12d, which transmits a drive force from an axial drive unit 14d formed by an eccentric to a piston unit 16d or to a hammer tube 48d Piston 50d is provided.
  • the transmission unit 12d is designed in several parts and has a push unit 28d and a connecting rod unit 30d.
  • the connecting rod unit 30d forms a first pivot point 20d facing the axial drive unit 14d and is essentially formed by a transfer means 22d designed as a connecting rod which is rectilinearly aligned parallel to a striking axis 26d, the transfer means 22d basically comprising bends and / or could also be aligned obliquely to a striking axis 26d.
  • the transmission means 22d is drive-coupled with a second connecting rod eye 72d and via a bearing pin 74d with a plate-shaped body 76d of the pushing unit 28d.
  • the plate-shaped body 76d is in the axial direction of a motor shaft 34d of an electric motor 32d by means of two on its top side and by means of two abutting on its underside plain bearing means 78d, 8Od and is perpendicular to the motor axis 34d and perpendicular to the axis of impact 26d on the side next to the plate-shaped body 76d arranged plate-shaped plain bearing means 82d led ( Figure 6).
  • the plate-shaped slide bearing means 82d are used in particular for damping transverse forces of the connecting rod unit 30d.
  • the chisel hammer has a so-called L-type construction, in which the motor axis 34d encloses an angle of 90 ° to the impact axis 26d.
  • the thrust unit 28d which is guided essentially parallel to the striking axis 26d, has, starting from the plate-shaped body 76d, a web 84d running obliquely to the striking axis 26d and a web 86d extending perpendicularly to the striking axis 26d and parallel to the motor axis 34a, which in a parallel or coaxial with the striking axis 26d extending web 88 d einstuckig, which forms a pivot point 18 d of the transfer unit 12 d, via which the transmission unit 12 d is coupled to the piston unit 16 d.
  • the articulation points 18d, 20d of the transmission unit 12d or their center points 42d, 44d have a spacing 46d in the direction of the motor axis 34c or a rotation axis of a motor shaft 4Od of the electric motor 32d. 20. 12. 05

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

Abstract

L'invention concerne une machine-outil tenue à la main, en particulier un marteau perforateur et/ou burineur, présentant une unité de percussion (10a - 10d), pourvue d'une unité de transmission (12a - 12d) prévue pour transmettre une force d'entraînement d'une unité d'entraînement axial (14a - 14d) à une unité à piston (16a - 16d). Selon la présente invention, l'unité de transmission (12a - 12d) présente des points d'articulation (18a - 18d, 20a - 20d) décalés en hauteur.
PCT/EP2006/067846 2005-12-22 2006-10-27 Machine-outil tenue à la main, en particulier marteau perforateur et/ou burineur WO2007073955A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005061402.7 2005-12-22
DE200510061402 DE102005061402A1 (de) 2005-12-22 2005-12-22 Handwerkzeugmaschine, insbesondere Bohr- und/oder Meißelhammer

Publications (1)

Publication Number Publication Date
WO2007073955A1 true WO2007073955A1 (fr) 2007-07-05

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ID=37621971

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/067846 WO2007073955A1 (fr) 2005-12-22 2006-10-27 Machine-outil tenue à la main, en particulier marteau perforateur et/ou burineur

Country Status (2)

Country Link
DE (1) DE102005061402A1 (fr)
WO (1) WO2007073955A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2480083A (en) * 2010-05-05 2011-11-09 Robert Alexander Mcdougall Hand held device to force open locked doors

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008061173A1 (de) * 2008-12-09 2010-06-10 Aeg Electric Tools Gmbh Hammerwerk für einen pneumatischen Hammer

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1901981A (en) * 1931-01-12 1933-03-21 Ragnar Erfass Motor-driven mechanical hammer
US1959516A (en) * 1930-08-28 1934-05-22 Black & Decker Mfg Co Hammer
DE1298954B (de) * 1963-04-26 1969-07-03 Impex Essen Vertrieb Schlaggeraet
US4436163A (en) * 1978-12-13 1984-03-13 Black & Decker Inc. Arrangement for converting rotary motion to reciprocatory motion
DE3314414A1 (de) * 1983-04-21 1984-10-25 Robert Bosch Gmbh, 7000 Stuttgart Bohrhammer
GB2191971A (en) * 1986-06-25 1987-12-31 Bosch Gmbh Robert Powered hand tool, in particular a hammer drill and/or percussion hammer
DE3910599A1 (de) * 1989-04-01 1990-10-04 Bosch Gmbh Robert Bohr- und/oder schlaghammer
WO1992010338A1 (fr) * 1990-12-04 1992-06-25 Robert Bosch Gmbh Outil mecanique a main avec mecanisme a excentrique
DE29800248U1 (de) * 1998-01-09 1999-05-06 Robert Bosch Gmbh, 70469 Stuttgart Bohr- und/oder Schlaghammer
WO2006120051A1 (fr) * 2005-05-11 2006-11-16 Robert Bosch Gmbh Machine portable electrique

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1959516A (en) * 1930-08-28 1934-05-22 Black & Decker Mfg Co Hammer
US1901981A (en) * 1931-01-12 1933-03-21 Ragnar Erfass Motor-driven mechanical hammer
DE1298954B (de) * 1963-04-26 1969-07-03 Impex Essen Vertrieb Schlaggeraet
US4436163A (en) * 1978-12-13 1984-03-13 Black & Decker Inc. Arrangement for converting rotary motion to reciprocatory motion
DE3314414A1 (de) * 1983-04-21 1984-10-25 Robert Bosch Gmbh, 7000 Stuttgart Bohrhammer
GB2191971A (en) * 1986-06-25 1987-12-31 Bosch Gmbh Robert Powered hand tool, in particular a hammer drill and/or percussion hammer
DE3910599A1 (de) * 1989-04-01 1990-10-04 Bosch Gmbh Robert Bohr- und/oder schlaghammer
WO1992010338A1 (fr) * 1990-12-04 1992-06-25 Robert Bosch Gmbh Outil mecanique a main avec mecanisme a excentrique
DE29800248U1 (de) * 1998-01-09 1999-05-06 Robert Bosch Gmbh, 70469 Stuttgart Bohr- und/oder Schlaghammer
WO2006120051A1 (fr) * 2005-05-11 2006-11-16 Robert Bosch Gmbh Machine portable electrique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2480083A (en) * 2010-05-05 2011-11-09 Robert Alexander Mcdougall Hand held device to force open locked doors

Also Published As

Publication number Publication date
DE102005061402A1 (de) 2007-06-28

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