EP1691954A1 - Marteau perforateur et/ou marteau pneumatique comportant un manche guide lineairement - Google Patents

Marteau perforateur et/ou marteau pneumatique comportant un manche guide lineairement

Info

Publication number
EP1691954A1
EP1691954A1 EP04803257A EP04803257A EP1691954A1 EP 1691954 A1 EP1691954 A1 EP 1691954A1 EP 04803257 A EP04803257 A EP 04803257A EP 04803257 A EP04803257 A EP 04803257A EP 1691954 A1 EP1691954 A1 EP 1691954A1
Authority
EP
European Patent Office
Prior art keywords
hammer
housing
breaking
handle
drill 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.)
Granted
Application number
EP04803257A
Other languages
German (de)
English (en)
Other versions
EP1691954B1 (fr
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/fr
Application granted granted Critical
Publication of EP1691954B1 publication Critical patent/EP1691954B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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.
  • Such a breaker and / or hammer drill hereinafter referred to as a hammer, is known from DE 34 47 401 AI.
  • a part of a hammer housing in which, among other things, a drive for the hammer and a striking mechanism driven by the drive are arranged, is surrounded by a grip device designed as a grip hood.
  • Handles for the operator are provided on the handle hood.
  • a guide device consisting of parallel rockers enables the handle cover to be displaced linearly relative to the hammer housing when the operator presses the hammer against the rock to be machined using the handles.
  • the parallel swing arms are still connected with torsion springs to allow vibration damping for the handle cover.
  • a handle is provided axially behind a hammer housing and is guided in a linearly movable manner relative to the hammer housing via a guide device.
  • the guide device consists of several straight guides, each having an inner guide element and an outer guide element surrounding the inner guide element at a distance, an elastic element being inserted between the inner and the outer guide element.
  • the elastic element points in the working direction of the hammer, i. H. in the direction of the longitudinal or impact axis of the hammer, greater elasticity than in a direction transverse to the longitudinal axis.
  • the guide device enables good vibration decoupling in the working direction, while the hammer can be held securely transversely to the working direction.
  • the described guide devices for linearly guiding a handle or a handle device relative to the hammer housing have proven themselves well in practice. Nevertheless, their implementation requires additional installation space and a construction effort due to an increased number of individual parts.
  • the invention is based on the object of specifying a breaker and / or hammer drill with a guiding device which is improved in terms of its guiding action for linear guiding of a grip device relative to a hammer housing while at the same time maintaining or improving vibration-damping properties and reducing construction costs.
  • a breaker and / or hammer drill according to the invention is characterized in that the guide device has a rolling element device which is effective between the hammer housing and the handle device.
  • the linear guide that can be implemented by the rolling element device enables the handle device to be reliably guided linearly relative to the hammer housing. Because the rolling element device allows a definable or minimizable friction effect between the handle device and hammer housing, a vibration decoupling effect can be set precisely. With a rolling element device, minimal 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 handle device. In addition, it is possible that completely separate guide elements no longer have to be provided for the guide device, as in the prior art. Rather, both the handle device and the hammer housing can be used as components of the guide device, as will be explained later.
  • the guide device is provided on the side of the hammer housing, based on the working direction (direction of impact, main direction). This allows an axial extension of the hammer, such as. B. from EP 0 949 988 B1 avoid.
  • the lateral arrangement of the guide device does not lead to an increase in the overall length of the hammer.
  • the handle device surrounds tion the hammer housing at a distance, so that a space is formed.
  • the guide device is arranged in the space between the hammer housing and the handle device. It therefore requires no additional housing and also no additional installation space, since due to the relative mobility between the handle device and hammer housing, an intermediate space is required anyway to allow the relative movement.
  • the rolling element device advantageously provides a defined spring property transversely to the working direction, that is to say transversely to the longitudinal or impact direction.
  • the grip device can also be moved transversely to the working direction relative to the hammer housing.
  • the transverse mobility should be significantly less than the longitudinal mobility, in order to enable the hammer to be guided well over the handle device or over the handle or handles.
  • this also enables a small angular offset between the hammer housing and the handle device, which in particular reduces the occurrence of transverse vibrations on the handle.
  • the rolling element device has a plurality of rolling elements which are rotatably fastened to the handle device and to which guide tracks provided on the outside of the hammer housing are assigned.
  • the rolling elements can roll accordingly on the guideways of the hammer housing, whereby a very simple, robust linear guide is achieved.
  • the rolling elements can be purchased parts that can be easily attached to the inside of the handle device. Since the commercially available rolling elements, e.g. B. plastic rollers, usually already equipped with bearings (plain bearings, roller bearings), the additional construction costs can be kept low.
  • the rolling elements are advantageously held against the guideways by a spring device with a defined force.
  • the spring device can accordingly be provided in each case between the rolling bodies and the handle device. This makes it possible to adjust the mobility of the handle device relative to the hammer housing precisely.
  • the rolling elements have a defined spring property and thus a deformability in their radial direction. This is possible in particular if the rolling elements are made of an elastic plastic material or have at least one running surface made of plastic. In this case, the rolling elements can be attached directly to the handle device by means of bearings. Due to the elastic deformability of the rolling elements relative to the guideways on which the rolling elements roll, there is sufficient transverse mobility of the grip device relative to the hammer housing.
  • a longitudinal spring device acting in the working direction is provided between the hammer housing and the handle device.
  • the longitudinal spring device which in addition to spring elements can also include damper devices, ensures reliable vibration decoupling of the vibrations occurring during operation of the hammer.
  • the result of this is that the handle device and in particular the handle provided on the handle device transmits only slight vibrations to the operator.
  • Passive elements eg rubber buffers
  • active or semi-damping or decoupling devices are suitable as damping devices.
  • the extent of the hammer housing in the working direction is advantageously 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 handle device and the hammer housing.
  • the hammer housing has a non-changing outer cross-sectional shape at least in a housing section that extends in the working direction.
  • the guide tracks can then be provided in a simple manner in this partial housing area.
  • an extruded guide cylinder can be used for the hammer housing, the uniform outer contour of which requires only a small amount of machining to produce the guide cable cars required.
  • the guideways can already be manufactured during extrusion, which results in a considerable reduction in manufacturing costs. In the ideal case, it is possible in this way that the components of the guide device provided on the hammer housing can be produced without additional manufacturing outlay.
  • the striking mechanism can also advantageously be arranged in the housing section.
  • the outer cross-sectional shape of the hammer housing is essentially prismatic.
  • One or more edges of the prism can be overlapped by the rolling elements attached to the gripping device.
  • the handle device represents a type of carrier for the handle or handles.
  • the handle device is designed as a handle hood which surrounds at least part of the hammer housing.
  • the grip hood can enclose the hammer housing in the form of a hood or bowl, as is the case, for. B. is known from DE 34 47 401 AI.
  • the handles are then attached to the outside of the handle hood or connected in one piece to it.
  • Figure 1 shows a breaker and / or hammer drill according to the invention in a lateral overall view.
  • FIG. 2 shows the hammer from FIG. 1, with a front cover of a handle hood being removed;
  • FIG. 3 shows a section along the line III-III in FIG. 2.
  • FIG. 1 shows a schematic side view of an opening according to the invention. Break and / or hammer drill, hereinafter referred to as a hammer. The same view is shown in FIG. 2, but with a front part of a handle hood 1 serving as a handle device being removed, so that a schematically illustrated hammer housing 2 is visible in the interior thereof.
  • a tool holder 4 emerges, in which a tool, for. B. a drill or a chisel can be fastened.
  • the hammer housing 2 has a drive housing 5, in which a motor drive, a crank drive, etc. are provided in a known manner.
  • a hammer mechanism housing 6 which also belongs to the hammer housing 2 and in which a hammer movement is generated from the drive movement generated by the motor and is finally applied to the tool (not shown). The operation of such a hammer is known and should therefore not be discussed further at this point.
  • a guide device 7 which has at least one 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 around the lay axis in the working direction.
  • the guide device 7 has a rolling element device 8 which comprises a plurality of rolling elements 9. In the example shown in FIG. 2, four rolling elements 9 can be seen.
  • the rolling elements 9 are rotatably fastened on the inside of the handle hood 1.
  • the rolling elements 9 can be purchased parts. 3 shows but a special production of the rolling elements 9.
  • the rolling elements 9 shown there have plastic rollers 9a (eg elastomer rollers), which are each supported via roller bearings 10 on an axis 11 held in the handle cover 1.
  • the plastic rollers 9a roll over guide tracks 12 which run parallel to the longitudinal direction A on the outside of the hammer housing. If it is in the hammer housing 2 or the striking mechanism housing 6 is an extruded profile, such as. 2 and 3, for example, the guideways 12 can already be produced by the extrusion process. If necessary, only a slight reworking of the guideways 12 is required.
  • the hammer housing 2 in particular the hammer mechanism housing 6 belonging to the hammer housing 2 extends more in the longitudinal direction than in one Direction across. This can also be seen in FIG. 2.
  • the rolling elements 9 arranged in pairs (upper pair and lower pair) then represent a reliable anti-tipping device on account of their relatively large axial distance in relation to the working direction A.
  • the rolling element devices 8 are each held by a spring device on the inside of the handle cover 1, as a result of which the rolling elements 9 or the plastic rollers 9a are pressed against the guide tracks 12 with a defined force.
  • the transverse mobility of the handle hood 1 relative to the hammer housing 2 can be set particularly precisely.
  • the plastic rollers 9 a can preferably also consist of an elastic material, so that they have a certain deformability in their radial direction. This makes it possible for the handle hood 1 to also be movable transversely to the hammer housing 2 against the spring action of the elastic material of the plastic rollers 9a.
  • a longitudinal spring device 13 is provided between the handle cover 1 and hammer housing 2.
  • the longitudinal spring device 13 comprises springs, which can be preloaded, so that the grip hood 1 can only be moved relative to the hammer housing 2 after the prestressing effect has been overcome.
  • 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 can also have damping elements that 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 the striking mechanism housing 6 belonging to the hammer housing 2, can have a prismatic cross section in principle, in which the outer cross-sectional shape corresponds at least schematically to a prism.
  • the guideways 12 are formed precisely in the region of the edges of the prism shape.
  • the edges need not be sharply drawn, but can have a cylindrical curvature, as shown in FIG. 3.
  • the plastic rollers 9a can grasp the "edges" of the prism as shown in FIG. 3. In this way, it can already be ensured with the two rolling bodies 9 shown in FIG. 3 that the grip hood 1 is guided relative to the hammer housing 2 and cannot break out in a direction perpendicular to the drive direction A.
  • the guide tracks 12 can also form depressions in which the plastic rollers 9a roll in a laterally guided manner.
  • a differently designed carrier can also be used for the handle or handles 3.
  • the carrier it is not necessary for the carrier to surround the hammer housing in the form of a hood. Rather, an open design, e.g. B. a cage construction can be used.

Landscapes

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

Abstract

L'invention concerne un marteau perforateur et/ou un marteau pneumatique comportant un boîtier de marteau (2) et un manche de préférence conçu en tant que capot de manche (1), pouvant se déplacer dans une direction de travail (A) par rapport au boîtier de marteau (2), et entourant au moins une partie du boîtier de marteau (2). Ledit marteau comporte également un dispositif de guidage (7) destiné au guidage linéaire du capot de manche (1) par rapport au boîtier de marteau (2). Ledit marteau est caractérisé en ce que le dispositif de guidage (7) comporte un système de roulements (8) agissant entre le boîtier de marteau (2) et le capot de manche (1). Ledit système de roulements (8) assure un guidage stable en matière de pivotement du capot de manche (1) par rapport au boîtier de marteau (2).
EP04803257A 2003-12-10 2004-11-24 Marteau perforateur et/ou marteau pneumatique comportant un manche guide lineairement Expired - Fee Related EP1691954B1 (fr)

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 (fr) 2003-12-10 2004-11-24 Marteau perforateur et/ou marteau pneumatique comportant un manche guide lineairement

Publications (2)

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

Family

ID=34672556

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04803257A Expired - Fee Related EP1691954B1 (fr) 2003-12-10 2004-11-24 Marteau perforateur et/ou marteau pneumatique comportant un manche guide lineairement

Country Status (7)

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

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
CN102348538B (zh) * 2008-11-17 2015-09-02 克里斯多佛·约翰·莱西 用于插入紧固件的器具和方法
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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Also Published As

Publication number Publication date
JP2007513784A (ja) 2007-05-31
DE502004008175D1 (de) 2008-11-13
WO2005056244A1 (fr) 2005-06-23
EP1691954B1 (fr) 2008-10-01
JP4686473B2 (ja) 2011-05-25
CN1863648A (zh) 2006-11-15
DE10357758A1 (de) 2005-07-21
US20080190632A1 (en) 2008-08-14
ES2311869T3 (es) 2009-02-16
CN100471631C (zh) 2009-03-25

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