EP1409206B1 - Marteau perforateur et/ou marteau de demolition muni(s) d'une poignee - Google Patents

Marteau perforateur et/ou marteau de demolition muni(s) d'une poignee Download PDF

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Publication number
EP1409206B1
EP1409206B1 EP02758385A EP02758385A EP1409206B1 EP 1409206 B1 EP1409206 B1 EP 1409206B1 EP 02758385 A EP02758385 A EP 02758385A EP 02758385 A EP02758385 A EP 02758385A EP 1409206 B1 EP1409206 B1 EP 1409206B1
Authority
EP
European Patent Office
Prior art keywords
percussion
hammer
housing
axis
motor
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
EP02758385A
Other languages
German (de)
English (en)
Other versions
EP1409206A1 (fr
Inventor
Wolfgang Schmid
Rudolf Berger
Peter Weyl
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.)
Wacker Construction Equipment AG
Original Assignee
Wacker Construction Equipment 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
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Application filed by Wacker Construction Equipment AG filed Critical Wacker Construction Equipment AG
Publication of EP1409206A1 publication Critical patent/EP1409206A1/fr
Application granted granted Critical
Publication of EP1409206B1 publication Critical patent/EP1409206B1/fr
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
    • 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

Definitions

  • the invention relates to a hand-held drilling and / or percussion hammer according to the preamble of claim 1.
  • Drills and / or impact hammers hereinafter referred to as hammers, depending on the intended use according to various design concepts produced.
  • Hammers with low electrical power consumption and light weight are generally handled with one hand executed in "pistol form".
  • For higher demands on performance of such a hammer leads to a correspondingly enlarged Diameter of an electric motor used in the hammer, in general a common universal motor, but a disadvantageous large distance between a percussion axis and the handle. This considerable misalignment therefore results in hammers with larger electrical Power consumption, which carried out according to this design concept would be to an unfavorable center of gravity and excessive Nick vibrations, resulting in a deteriorated handling of the hammer.
  • Document GB-A-2 154 497 discloses a hammer drill according to the preamble of claims 1 and 6.
  • the invention is based on the object, a hand-held drilling and / or Specify impact hammer that has compact outer dimensions.
  • An inventive hand-held drill and / or percussion hammer hereinafter referred to as a hammer, has an electric motor, one of which Electric motor drivable percussion, an electric motor and the Schlagtechnik receiving housing and a handle on, the so on the housing is formed, that a gripping position in an extension a striking axis of the striking mechanism is located.
  • a gripping position in an extension a striking axis of the striking mechanism is located.
  • the axis of rotation the motor shaft of the electric motor with the impact axis paraxial.
  • the arrangement of the handle at the height of the striking axis allows one Operation of the hammer without annoying pitching vibrations while aligning the motor shaft a significant reduction in manufacturing costs Result has, because the number of required components are significantly reduced can.
  • the structure of the invention is particularly suitable for hammers medium performance class or above.
  • the electric motor be formed of a three-phase motor, further in the housing a converter for supplying power to the three-phase motor with a suitable Power frequency is provided.
  • the three-phase motor can be significantly reduce the overall length of the hammer in its longitudinal direction, because a three-phase motor does not compare to a universal motor only builds shorter due to the omission of a collector, but this engine type can also be shorter by the length of one or both engine mounts, since this unlike the universal motor due to the absence of a far over the end faces of the rotor core packet protruding winding on the rotor can be installed in the winding of the stator.
  • a wobble shaft device can be arranged in the housing be provided, which is a rotary motion of the three-phase motor converted into a float for the percussion, wherein the three-phase motor - based on the striking axis in horizontal position - above the wobble shaft and behind the percussion - so between percussion and handle - can be arranged.
  • a wobble shaft device is provided in the housing, which is a Rotary motion of the AC motor into a float for that Schlagtechnik converts, with the three-phase motor below the percussion and below the wobble shaft device, each based on the Schlagachse in horizontal position, can be arranged.
  • the resulting total length This embodiment is extremely short, resulting in a excellent handling of the hammer.
  • the handle formed on the housing is a spade handle, the three-phase motor in a region of the housing below the spade handle can be arranged.
  • the converter for reasons of space U-shaped and above the striking mechanism and above the wobble shaft device, based on the Schlagachse in horizontal position, be arranged.
  • This possible configuration the converter has the advantage that unnecessary voids in the housing can be filled in accordance with the converter, which is reflected in the compact outer dimensions of the hammer. Further This can efficiently dissipate the heat loss generated in the converter the housing can be discharged to the outside.
  • the hammer is on the Housing formed a spade handle. This can be an offset between the main working direction of the hammer and a point of attack either greatly reduced or too high for a major operator's hand Become zero, which is in terms of applying higher pressure forces and a fatigue-free use with prolonged use of the hammer is advantageous.
  • a small overall length in the longitudinal direction of the hammer of the above-explained Embodiments comprising a wobble shaft device can, is also achieved by the impact mechanism as a hollow piston impactor is executed, with hollow drive piston and movable therein Impact piston, wherein the wobble shaft device as a drive for the Hollow piston impact mechanism is used.
  • the impact mechanism as a hollow piston impactor is executed, with hollow drive piston and movable therein Impact piston, wherein the wobble shaft device as a drive for the Hollow piston impact mechanism is used.
  • Opposite tube impactors with crankshaft and connecting rods which are common in this performance class, build the hollow piston impact testers with wobble shaft drive in the axial direction much more compact.
  • the electric motor is a universal motor.
  • this embodiment may be formed on the housing a spade handle, wherein further the universal motor in a lower housing bar, d. H. in one area the housing below the spade handle, can be arranged.
  • Figs. 1 to 4 are respectively a basic structure of a first to fourth Embodiment of a hammer and / or percussion hammer according to the invention 1, hereinafter referred to as hammer, in a side sectional view shown.
  • the first to fourth embodiments shown in Figs is common that a housing 2 is provided, in which one end a tool holder 3 arranged with a chuck 4 stored is, in which a tool (not shown) can be clamped.
  • a shaft 3a of the tool holder 3 leads into the housing 2 and is by means of a first bearing device 5 is mounted in the housing 2 about a first axis 6.
  • the first Axis 6 parallel to a horizontal main working direction of the hammer. 1 is that results from the orientation of the tool holder 3 and the Longitudinal or impact axis of a tool corresponds.
  • a handle 7 For safe handling of the hammer 1 is on the housing 2 in height the first bearing device 5, a handle 7 attached.
  • the handle 7 extends in its longitudinal direction substantially perpendicular to Main working direction of the hammer, whereby, when an operator the Handle 7 engages around with one hand, a reliable support of the torque by the operator is possible.
  • a jug or spade handle 8 trained, embrace the operator with her main hand can.
  • the spade handle 8 is in two places, i. above and below hinged to the housing 2. As can be seen in the figures, is by the provision the spade handle 8 ensures that the gripping position, ie the main hand of the operator always substantially at height or in Extension of the first axis 6 and thus also the striking axis is located, resulting in a favorable center of gravity and avoiding vibrations and disadvantageous pitching oscillations about the first axis 6.
  • an operation switch 8a provided by the operation of the operator Hammer 1 in operation or can put out of service. The operation switch 8a is also arranged approximately in extension of the striking axis to the desired To get gripping position.
  • FIGS. 1 to 4 all embodiments shown in FIGS. 1 to 4 are common, in that within the shaft 3a leading into the housing 2 Tool holder 3, a striker 3b is arranged.
  • the striker 3b is in the Shaft 3a in a direction parallel to the axis 6 and Kir Hauptarbeitsraum movable.
  • a Schlagtechnik 9 provided, which is designed as a hollow piston impaction.
  • the Schlagtechnik 9 has a percussion piston 10, the impact piston 10th in a known manner driving drive piston 11 and a percussion tube 12, in which the unit consisting of the percussion piston 10 and the drive piston 11 is movably guided parallel to the axis 6.
  • a longitudinal axis the impact mechanism 9 is coaxial with the first axis. 6
  • a flange 13 with a guide eye 14 provided, wherein at a portion of the percussion tube 12, the extends over the flange 13, an external toothing 15 is formed.
  • a first pin 19 is by means of a third bearing means 20 at a Main body of the wobble shaft device 16 is provided and extends at an angle to the second axis 17.
  • a free end of the first pin 19 is rotatably supported in the guide eye 14 of the flange 13.
  • the main body of the wobble shaft means 16 has a second pin 21 with an external toothing 21a, wherein the second pin 21 in such a way axially parallel to the percussion 9 and the percussion tube 12 extends, that the external teeth 21 a of the second pin 21 with the external teeth 15 of the percussion tube 12 is engaged.
  • the wobble shaft device 16 described above makes it possible, on the one hand, that the percussion tube 12 of the percussion mechanism 9 via the second pin 21 is rotated, which consequently leads to a rotation of the Tool holder 3 for a drilling function of the hammer 1 leads. Furthermore the first pin 19 passes during a rotation of the wobble shaft device 16 about the second axis 17 continuously from a first working position "A" to a second working position "B” and back to the first Working position "A". By the storage of the free end of the first pin 19 in the guide eye 14 is thus the flange 13 and thus the drive piston 11 of the striking mechanism in a reciprocating motion parallel to first axis 6 offset.
  • a coupling device (not shown) can be adjusted accordingly be whether a rotational movement of a motor to be explained below in a rotational movement of the percussion tube 12 or in a striking movement the drive piston 11 and thus the percussion piston 10 is converted is, or if there is a superposition of the rotational movement of the striking tube 12 with the translational reciprocating motion of the drive piston 11 and the percussion piston 10 for a simultaneous drilling and impact of the hammer 1 is coming.
  • a tool (not shown) is so in the chuck 4 of the tool holder 3 insert that it is positively in the radial direction, and thus movable in the horizontal direction parallel to the main working direction is.
  • the striker 3b is configured such that a tool holder 3 facing first end thereof adjacent to the chuck 4.
  • a the percussion 9 facing the second end of the striker 3b extends so by the shaft 3a that it is with an end face of the percussion piston 10 in Can contact.
  • a first embodiment of the hammer 1 is shown at a three-phase motor 23 via a fourth bearing means 24 in the housing 2 above the wobble shaft 16 and behind the percussion 9 is recorded.
  • a three-phase motor is generally characterized in that it due to the omission of the otherwise usual in universal motors collector a having small dimension in the axial direction.
  • the axial length of this Motor type can also be reduced by the length of the engine mounts, since this in contrast to the universal motor due to the absence of a lot over the End faces of the rotor laminated core projecting winding on the rotor in can be installed in the area of the winding of the stator.
  • a decisive feature of this embodiment is that the three-phase motor 23 is accommodated in the housing 2 in such a way that an axis of rotation 25 of a motor shaft 26 of the three-phase motor 23 is axially parallel to the first axis 6 or the main working direction of the hammer 1.
  • the above-mentioned aspects result in that the overall length L GES of the hammer 1 in its longitudinal direction is smaller compared to hammers of this power class if a universal motor were installed in such a way that its motor axis would be parallel to the main working direction. For hammers in this class, shortening in the range of 50 to 70 mm can be assumed.
  • a converter 27 arranged to the three-phase motor 23 to provide energy accordingly.
  • the converter 27 may be suitable be fed with single-phase AC power and forms the Mains current in a suitable for the three-phase motor 23 current.
  • the motor shaft 26 of the three-phase motor 23 has at a free end, the in alignment with one on the main body of the wobble shaft device 16 trained flange toothing 28 is an external toothing 29, which is in engagement with the flange toothing 28. To this Way, it is possible the rotation of the motor shaft 26 of the three-phase motor 23 to the wobble shaft device 16 to transmit.
  • Fig. 2 is a second embodiment of the invention in a lateral Section view shown.
  • This second embodiment is broad identical to the first embodiment, wherein like reference numerals are used for the same components, their explanation at this point not repeated.
  • the three-phase motor 23 in a region of the housing 2 below the Spade handle 8 is arranged.
  • the converter 27 behind the striking mechanism 9 and above the wobble shaft device 16, each related to the main working direction arranged.
  • a third embodiment of the hammer 1 from that in Fig. 3 a basic structure is shown in a side sectional view, is a outer shape of the housing 2 compared to the first embodiment and modified to the second embodiment in that in this case the Three-phase motor 23 below the hammer mechanism 9 and below the wobble shaft device 16, each related to the main working direction arranged is.
  • the converter 27 is formed in a U-shape and above the striking mechanism 9 and arranged above the wobble shaft device 16, respectively related to the main field of work.
  • this form of the Arrangement of the converter 27 advantageous because they have very little space in the Housing 2 takes. Furthermore, can be through the U-shape in the Converter 27 resulting heat loss efficiently through the housing 2 after leave outside.
  • the remaining components of the third embodiment are substantially identical to those of the first and second embodiments.
  • FIG. 4 shows a basic structure of a fourth embodiment, which is essentially identical to the second embodiment explained above.
  • a universal motor 30 is accommodated here in the housing 2 instead of a three-phase motor, which has a larger dimension in the axial direction due to a separate motor bearing outside the winding of the stator. Due to the advantageous arrangement of the universal motor in the housing 2, wherein the axis of rotation 25 of the motor shaft 26 of the universal motor 30 is axially parallel to the main working direction, however, can be achieved in the fourth embodiment, a reduced overall length L GES compared to hammering this class, if in these the electric motor would be arranged in the housing as shown here.

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

Claims (6)

  1. Marteau perforateur et/ou démolisseur (1) comportant
    un moteur électrique (23 ; 30),
    un mécanisme de percussion (9) pouvant être entraíné par le moteur électrique (23 ; 30),
    un carter (2) recevant le moteur électrique (23 ; 30) et le mécanisme de percussion (9), et comportant
    une poignée (8) qui est réalisée sur le carter (2) de manière qu'une position de préhension se trouve à la hauteur d'un prolongement d'un axe de percussion (6) du mécanisme de percussion (9),
    l'axe de rotation (25) d'un arbre moteur (26) du moteur électrique (23 ; 30) étant parallèle à l'axe de percussion (6),
    caractérisé en ce que le moteur électrique (23 ; 30) est disposé dans une zone du carter (2) au-dessous de la poignée (8) dans une position horizontale par rapport à l'axe de percussion.
  2. Marteau perforateur et/ ou démolisseur (1) selon la revendication 1, caractérisé en ce que
    le moteur électrique est un moteur triphasé (23), et en ce que
    un convertisseur (27) est prévu dans le carter (2) pour l'alimentation en énergie du moteur triphasé (23).
  3. Marteau perforateur et/ou démolisseur (1) selon la revendication 2, caractérisé en ce qu'il est prévu un dispositif à arbre oscillant (16) dans le carter (2), lequel transforme un mouvement de rotation du moteur triphasé (3) en un mouvement en sens alternés du mécanisme de percussion (9).
  4. Marteau perforateur et/ou démolisseur (1) selon la revendication 2 ou 3, caractérisé en ce que le convertisseur (27) est réalisé en forme de U et est disposé au-dessus du mécanisme de percussion (9) ainsi qu'au-dessus du dispositif à arbre oscillant (16), dans chaque cas dans une position horizontale par rapport à l'axe de percussion.
  5. Marteau perforateur et/ou démolisseur (1) selon la revendication 1, caractérisé en ce que le moteur électrique est un moteur universel (30):
  6. Marteau perforateur et/ou démolisseur (1) comportant
    un moteur électrique (23 ; 30),
    un mécanisme de percussion (9) pouvant être entraíné par le moteur électrique (23 ; 30),
    un carter (2) recevant le moteur électrique (23 ; 30) et le mécanisme de percussion (9), et comportant
    une poignée (8) qui est réalisée sur le carter (2) de manière qu'une position de préhension se trouve à la hauteur d'un prolongement d'un axe de percussion (6) du mécanisme de percussion (9),
    l'axe de rotation (25) d'un arbre moteur (26) du moteur électrique (23 ; 30) étant parallèle à l'axe de percussion (6),
    caractérisé en ce que
    le moteur électrique est un moteur triphasé (23), un convertisseur (27) est prévu dans le carter (2) pour l'alimentation en énergie du moteur triphasé (23), et en ce que
    le moteur triphasé (23) est disposé dans une position horizontale par rapport à l'axe de percussion, au-dessus du dispositif à arbre oscillant (16) et derrière le mécanisme de percussion (9), c'est-à-dire entre le mécanisme de percussion (9) et la poignée (8).
EP02758385A 2001-07-26 2002-07-24 Marteau perforateur et/ou marteau de demolition muni(s) d'une poignee Expired - Lifetime EP1409206B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10136515 2001-07-26
DE10136515A DE10136515C2 (de) 2001-07-26 2001-07-26 Bohr- und/oder Schlaghammer mit Handgriff
PCT/EP2002/008255 WO2003011531A1 (fr) 2001-07-26 2002-07-24 Marteau perforateur et/ou marteau de demolition muni(s) d'une poignee

Publications (2)

Publication Number Publication Date
EP1409206A1 EP1409206A1 (fr) 2004-04-21
EP1409206B1 true EP1409206B1 (fr) 2005-09-28

Family

ID=7693234

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02758385A Expired - Lifetime EP1409206B1 (fr) 2001-07-26 2002-07-24 Marteau perforateur et/ou marteau de demolition muni(s) d'une poignee

Country Status (6)

Country Link
US (1) US6843330B2 (fr)
EP (1) EP1409206B1 (fr)
JP (1) JP4227517B2 (fr)
DE (2) DE10136515C2 (fr)
ES (1) ES2248594T3 (fr)
WO (1) WO2003011531A1 (fr)

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JP5041575B2 (ja) * 2006-03-07 2012-10-03 日立工機株式会社 打撃工具
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DE102008000687A1 (de) * 2008-03-14 2009-09-17 Robert Bosch Gmbh Handwerkzeugmaschine für schlagend angetriebene Einsatzwerkzeuge
DE102008000677A1 (de) * 2008-03-14 2009-09-17 Robert Bosch Gmbh Handwerkzeugmaschine für schlagend angetriebene Einsatzwerkzeuge
WO2009137808A1 (fr) * 2008-05-09 2009-11-12 Milwaukee Electric Tool Corporation Poignée auxiliaire pour outil à moteur
US9776296B2 (en) 2008-05-09 2017-10-03 Milwaukee Electric Tool Corporation Power tool dust collector
JP5479023B2 (ja) * 2009-10-20 2014-04-23 株式会社マキタ 充電式電動工具
CN103079770B (zh) * 2010-08-27 2017-02-01 博世电动工具（中国）有限公司 手持式电动工具
DE102010062094A1 (de) * 2010-11-29 2012-05-31 Robert Bosch Gmbh Hammerschlagwerk
US9038745B2 (en) * 2010-12-20 2015-05-26 Brigham Young University Hand power tool and drive train
EP2718067B1 (fr) 2011-04-11 2023-10-11 Milwaukee Electric Tool Corporation Dispositif de poinçon éjecteur hydraulique à main
US9016317B2 (en) 2012-07-31 2015-04-28 Milwaukee Electric Tool Corporation Multi-operational valve
DE102012221748A1 (de) * 2012-11-28 2014-05-28 Robert Bosch Gmbh Handwerkzeugmaschine
JP6325360B2 (ja) * 2014-06-12 2018-05-16 株式会社マキタ 打撃工具
US11084006B2 (en) 2017-03-23 2021-08-10 Milwaukee Electric Tool Corporation Mud mixer
CA3148118A1 (fr) 2019-07-29 2021-02-04 Lightmatter, Inc. Systemes et procedes de calcul analogique faisant appel a un processeur photonique lineaire
CN111864978B (zh) * 2020-07-29 2022-12-27 吉林大学 一种孔用耐压柱状直线振动器
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Also Published As

Publication number Publication date
DE50204410D1 (de) 2005-11-03
JP4227517B2 (ja) 2009-02-18
DE10136515A1 (de) 2003-02-13
EP1409206A1 (fr) 2004-04-21
JP2004535946A (ja) 2004-12-02
DE10136515C2 (de) 2003-10-23
US6843330B2 (en) 2005-01-18
WO2003011531A1 (fr) 2003-02-13
US20040104033A1 (en) 2004-06-03
ES2248594T3 (es) 2006-03-16

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