EP1691954B1 - Aufbruch- und/oder bohrhammer mit linear geführter griffeinrichtung - Google Patents

Aufbruch- und/oder bohrhammer mit linear geführter griffeinrichtung Download PDF

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Publication number
EP1691954B1
EP1691954B1 EP04803257A EP04803257A EP1691954B1 EP 1691954 B1 EP1691954 B1 EP 1691954B1 EP 04803257 A EP04803257 A EP 04803257A EP 04803257 A EP04803257 A EP 04803257A EP 1691954 B1 EP1691954 B1 EP 1691954B1
Authority
EP
European Patent Office
Prior art keywords
hammer
housing
percussion
drill
gripping device
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.)
Not-in-force
Application number
EP04803257A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1691954A1 (de
Inventor
Rudolf Berger
Wolfgang Schmid
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 Neuson SE
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
Application filed by Wacker Construction Equipment AG filed Critical Wacker Construction Equipment AG
Publication of EP1691954A1 publication Critical patent/EP1691954A1/de
Application granted granted Critical
Publication of EP1691954B1 publication Critical patent/EP1691954B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B25D17/04—Handles; Handle mountings
    • B25D17/043—Handles resiliently mounted relative to the hammer housing
    • 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
    • B25D17/24—Damping the reaction force
    • 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
    • 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
    • B25D2250/331—Use of bearings
    • 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
    • B25D2250/371—Use of springs

Definitions

  • the invention relates to a breaker and / or hammer drill according to the preamble of claim 1.
  • a hammer is made, for example US-A-5,522,466 known.
  • Such a breaker and / or hammer drill hereinafter referred to as a hammer, is from the DE 34 47 401 A1 known.
  • a part of a hammer housing in which, inter alia, a drive of the hammer and driven by the drive percussion are arranged, surrounded by a handle designed as a grip device. Handles for the operator are provided on the grip hood.
  • a parallel swing guide means allows the handle cover to translate linearly relative to the hammer housing as the operator presses the hammer over the handles against the rock to be worked.
  • the parallel rockers are still connected to torsion springs to allow vibration damping for the grip hood.
  • a handle is provided axially behind a hammer housing, which is guided via a guide device relative to the hammer housing linearly movable.
  • the guide device consists of a plurality of linear guides, each having an inner guide member and an inner guide member at a distance surrounding outer guide member, wherein between the inner and the outer guide member, an elastic member is inserted.
  • the elastic element has a greater elasticity in the working direction of the hammer, ie in the direction of the longitudinal or striking axis of the hammer, than in a direction transverse to the longitudinal axis. This allows the guide device a good vibration isolation in the working direction, while the hammer can be held securely across the working direction.
  • the invention has for its object to provide a breaker and / or hammer drill, with an improved guidance with respect to their leadership means for linear guidance of a handle device relative to a hammer housing while maintaining or improving vibration damping properties and a reduction in construction costs.
  • An inventive breaking and / or hammer drill is characterized in that the guide means comprises an effective between the hammer housing and the handle device Wälzianus Surprise.
  • the realizable by the Wälzterrorism issued linear guide allows the handle device is reliably guided linearly relative to the hammer housing.
  • Characterized in that the Wälz stresses adopted allows a definable or minimizable frictional action between the handle device and the hammer housing, a vibration decoupling effect can be adjusted precisely.
  • minimum friction values can be achieved, which allow a good relative movement between the handle device and the hammer housing, so that the vibrations of the hammer housing are not transmitted to the grip device.
  • the guide device based on the working direction (direction of impact, main direction), laterally provided on the hammer housing. This allows an axial extension of the hammer, such. B. from the EP 0 949 988 B1 can be seen, avoid.
  • the lateral arrangement of the guide means does not increase the overall length of the hammer.
  • the grip device surrounds the hammer housing at a distance, so that a gap is formed.
  • the guide device is arranged in the intermediate space between the hammer housing and the gripping device. Therefore, it requires no additional housing and no additional space, since due to the relative mobility between the handle device and hammer housing anyway a space to allow the relative movement is required.
  • the Wälz stresses granted a defined spring property transversely to the working direction, ie transversely to the longitudinal or direction of impact.
  • the grip device in addition to the linear mobility, is also movable transversely to the working direction relative to the hammer housing.
  • the transverse mobility should be significantly less than the longitudinal mobility to allow a good guidance of the hammer on the handle device or on the one or more handles.
  • a small angular offset between the hammer housing and the handle device is possible, which reduces in particular the occurrence of transverse vibrations on the handle.
  • the WälzShores drove a plurality of rolling elements, which are rotatably mounted on the handle device and which are assigned to the outside of the hammer housing provided guideways.
  • the rolling elements can accordingly roll on the tracks of the hammer housing, whereby a very simple, robust linear guide is achieved.
  • the rolling elements may be purchased parts that can be easily attached to the inside of the grip device. Since the commercially available rolling elements, eg. As plastic rollers, usually already equipped with bearings (plain bearings, roller bearings), the additional construction costs can be kept low.
  • the rolling elements are each held by a spring device with a defined force against the guideways.
  • the spring device can accordingly be provided in each case between the rolling elements and the grip device. This makes it possible, the transverse mobility the grip device to adjust precisely relative to the hammer housing.
  • the rolling elements have a defined spring property and thus a deformability in their radial direction. This is particularly possible if the rolling elements consist of an elastic plastic material or at least have a running surface made of plastic. In this case, the rolling elements can be attached directly to the grip device by means of bearings. Due to the elastic deformability of the rolling elements relative to the guideways on which the rolling elements roll, sufficient gripper mobility of the gripping device relative to the hammer housing is produced.
  • a longitudinal spring device acting in the working direction is provided between the hammer housing and the gripping device.
  • the longitudinal spring device which may include damper devices in addition to spring elements, ensures a reliable vibration isolation of the vibrations occurring during operation of the hammer. This ensures that the handle device and in particular the handle provided on the handle transmits only small vibrations to the operator.
  • Suitable damping devices are passive elements (eg rubber buffers) as well as active or semi-active damping or decoupling devices.
  • the extent of the hammer housing in the working direction is greater than in a direction transverse to the working direction.
  • the hammer has an elongated extension, which benefits the possibility of longitudinal guidance between the gripping device and the hammer housing.
  • the hammer housing at least in a extending in the direction of housing housing portion on a non-changing outer cross-sectional shape.
  • this housing portion can then provide the guideways in a simple manner.
  • z. B. for the hammer housing an extruded guide cylinder can be used, the uniform outer contour only a small amount of machining for producing the guideways requires.
  • the guideways can already be produced during extrusion, which brings a considerable reduction in manufacturing costs.
  • the striking mechanism can also be advantageously arranged in the housing subregion.
  • the outer cross-sectional shape of the hammer housing is designed substantially prismatic.
  • one or more edges of the prism can be overlapped by the rolling elements attached to the gripping device.
  • the gripping device is a kind of carrier for the handle or handles.
  • the gripping device is designed as a gripping hood, which surrounds at least a part of the hammer housing.
  • the handle cover can hood or cup-shaped enclosing the hammer housing, as z. B. from the DE 34 47 401 A1 is known.
  • the handles are then attached to the exterior of the handle cover or integrally connected thereto.
  • Fig. 1 shows a schematic side view of a breakaway and / or hammer drill, hereinafter referred to as a hammer.
  • Fig. 2 the same view is shown, but with a front part of serving as a handle device handle cover 1 is removed, so that in the interior of a schematically illustrated hammer housing 2 is visible.
  • a tool for. B. a drill or a chisel is fastened.
  • the hammer housing 2 has a drive housing 5, in which in a known manner a motor drive, a crank mechanism, etc. are provided. Below the drive housing 5, a striking mechanism housing 6, which likewise belongs to the hammer housing 2, is arranged, in which a striking movement is generated from the drive movement generated by the motor, which is finally applied to the tool, not shown.
  • a striking movement is generated from the drive movement generated by the motor, which is finally applied to the tool, not shown.
  • a guide means 7 is provided, at least a linear guide of the handle cover 1 relative to the hammer housing 2 in the working direction A (direction of impact, longitudinal direction) of the hammer, but preferably also a guide of the handle cover 1 relative to the hammer housing 2 transversely to the working direction and in a direction of rotation about the direction of action lying beating axis allows.
  • the guide device 7 has a WälzSystem Surprise 8, which comprises a plurality of rolling elements 9. At the in Fig. 2 shown example four rolling elements 9 can be seen.
  • the rolling elements 9 are rotatably mounted on the inside of the handle cover 1.
  • the rolling elements 9 may be purchased parts.
  • Fig. 3 shows however a special production of the rolling elements 9.
  • the rolling elements 9 shown there have plastic rollers 9a (eg elastomeric rollers) which are respectively mounted on roller bearings 10 on an axis 11 held in the handle cover 1.
  • the plastic rollers 9a roll over guide tracks 12 which extend parallel to the longitudinal direction A on the outside of the hammer housing. If it is the hammer housing 2 and the striking mechanism housing 6 is an extruded profile, such as. In Fig. 2 and 3 shown, the guideways 12 can already be prepared by the extrusion process. Optionally, only a minor reworking of the guideways 12 is required.
  • the hammer housing 2 in particular that belongs to the hammer housing 2 striking mechanism housing 6 extends in the longitudinal direction more than in a direction transverse thereto , This is also out Fig. 2 seen.
  • the paired rolling elements 9 (upper pair and lower pair) then represent a reliable Kipp Klisch due to their relative to the working direction A relatively large axial distance.
  • the Wälz stresses sexual shorten 8 are each held by a spring means on the inside of the handle cover 1, whereby the rolling elements 9 and the plastic rollers 9a are pressed with a defined force against the guideways 12.
  • the transverse mobility of the handle cover 1 relative to the hammer housing 2 can be set particularly precisely.
  • the plastic rollers 9a may preferably also be made of an elastic material, so that they have a certain deformability in their radial direction. This makes it possible that the handle cover 1 is also transversely to the hammer housing 2, against the spring action of the elastic material of the plastic rollers 9a movable.
  • a longitudinal spring device 13 is provided between the handle cover 1 and hammer housing 2.
  • the longitudinal spring device 13 comprises springs, which may be biased, so that the handle cover 1 is movable relative to the hammer housing 2 only after overcoming the biasing effect.
  • the longitudinal spring device 13 ensures that the grip hood 1 returns to the initial state relative to the hammer housing 2 after relief.
  • the longitudinal spring device 13 may moreover also have damping elements which allow an adaptation of the damping effect.
  • damping elements can be passive, active or semi-active dampers or decoupling devices, which as such are already known from the prior art.
  • the hammer housing 2 in particular belonging to the hammer housing 2 striking mechanism housing 6, have a prismatic in principle cross-section, in which the outer cross-sectional shape at least schematically corresponds to a prism.
  • the guideways 12 are formed exactly in the region of the edges of the prism shape.
  • the edges need not be sharply drawn, but may have a cylindrical curvature, as in Fig. 3 is shown.
  • the plastic rollers 9a it is possible for the plastic rollers 9a to have a hollow-edged outer contour, with which they can embrace the guide tracks 12, ie the "edges" of the prism, as in FIG Fig. 3 shown. In this way can already be with the two in Fig. 3 Ensure rolling elements 9 shown that the handle cover 1 is guided relative to the hammer housing 2 and can not break out in a direction perpendicular to the drive direction A.
  • the guideways 12 can form recesses in which the plastic rollers 9a roll out laterally.
  • a differently shaped support for the handle or handles 3 can be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
EP04803257A 2003-12-10 2004-11-24 Aufbruch- und/oder bohrhammer mit linear geführter griffeinrichtung Not-in-force EP1691954B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10357758A DE10357758A1 (de) 2003-12-10 2003-12-10 Aufbruch- und/oder Bohrhammer mit linear geführter Griffeinrichtung
PCT/EP2004/013338 WO2005056244A1 (de) 2003-12-10 2004-11-24 Aufbruch- und/oder bohrhammer mit linear geführter griffeinrichtung

Publications (2)

Publication Number Publication Date
EP1691954A1 EP1691954A1 (de) 2006-08-23
EP1691954B1 true EP1691954B1 (de) 2008-10-01

Family

ID=34672556

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04803257A Not-in-force EP1691954B1 (de) 2003-12-10 2004-11-24 Aufbruch- und/oder bohrhammer mit linear geführter griffeinrichtung

Country Status (7)

Country Link
US (1) US20080190632A1 (zh)
EP (1) EP1691954B1 (zh)
JP (1) JP4686473B2 (zh)
CN (1) CN100471631C (zh)
DE (2) DE10357758A1 (zh)
ES (1) ES2311869T3 (zh)
WO (1) WO2005056244A1 (zh)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8047302B2 (en) * 2001-12-21 2011-11-01 Wacker Neuson Produktion GmbH & Co. KG Drilling and/or striking hammer with a lubricating device
DE102004047606A1 (de) * 2004-09-30 2006-04-06 Hilti Ag Bohr- und/oder Meisselhammer
DE102006000253A1 (de) * 2006-05-30 2007-12-06 Hilti Ag Schlagende Handwerkzeugmaschine mit axial beweglich gelagertem Schlagwerk
DE102007037048A1 (de) * 2007-08-06 2009-02-12 Robert Bosch Gmbh Zusatzhandgriffvorrichtung
DE102008050323A1 (de) * 2008-10-04 2010-04-08 Protool Gmbh Hand-Werkzeugmaschine mit einer Handgriffanordnung
CA2743943C (en) * 2008-11-17 2018-01-02 Christopher John Lacy Apparatus and methods for inserting a fastener
JP6125392B2 (ja) 2013-09-27 2017-05-10 株式会社マキタ 打撃工具
JP6188593B2 (ja) * 2014-01-21 2017-08-30 株式会社マキタ 打撃工具
JP6441588B2 (ja) * 2014-05-16 2018-12-19 株式会社マキタ 打撃工具
GB2548579B (en) * 2016-03-21 2019-06-26 Webster Tech Limited A power tool comprising a tool carrier for mounting an impact tool
GB2564712B (en) 2017-07-21 2020-01-29 Webster Tech Limited Power Tool
CN108677629B (zh) * 2018-07-14 2023-11-03 徐瀛 一种电动捣固机

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US1845825A (en) * 1927-07-22 1932-02-16 Chicago Pneumatic Tool Co Spring handle attachment for rock drills
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DE102004019776A1 (de) * 2004-04-23 2005-11-17 Robert Bosch Gmbh Handwerkzeugmaschine, insbesondere Bohr- und/oder Schlaghammer

Also Published As

Publication number Publication date
EP1691954A1 (de) 2006-08-23
WO2005056244A1 (de) 2005-06-23
JP4686473B2 (ja) 2011-05-25
DE10357758A1 (de) 2005-07-21
US20080190632A1 (en) 2008-08-14
CN100471631C (zh) 2009-03-25
CN1863648A (zh) 2006-11-15
DE502004008175D1 (de) 2008-11-13
ES2311869T3 (es) 2009-02-16
JP2007513784A (ja) 2007-05-31

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