WO2005056244A1 - Aufbruch- und/oder bohrhammer mit linear geführter griffeinrichtung - Google Patents
Aufbruch- und/oder bohrhammer mit linear geführter griffeinrichtung Download PDFInfo
- Publication number
- WO2005056244A1 WO2005056244A1 PCT/EP2004/013338 EP2004013338W WO2005056244A1 WO 2005056244 A1 WO2005056244 A1 WO 2005056244A1 EP 2004013338 W EP2004013338 W EP 2004013338W WO 2005056244 A1 WO2005056244 A1 WO 2005056244A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hammer
- housing
- breaking
- handle
- drill according
- Prior art date
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.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006543415A JP4686473B2 (ja) | 2003-12-10 | 2004-11-24 | ハンマの縦方向に案内されるグリップ装置を有する打撃及び/又は穿孔ハンマ |
DE502004008175T DE502004008175D1 (de) | 2003-12-10 | 2004-11-24 | Aufbruch- und/oder bohrhammer mit linear geführter griffeinrichtung |
US10/596,298 US20080190632A1 (en) | 2003-12-10 | 2004-11-24 | Percussion Hammer and/or Drill Hammer Comprising a Handle Which Can be Guided in a Linear Manner |
EP04803257A EP1691954B1 (de) | 2003-12-10 | 2004-11-24 | Aufbruch- und/oder bohrhammer mit linear geführter griffeinrichtung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10357758.0 | 2003-12-10 | ||
DE10357758A DE10357758A1 (de) | 2003-12-10 | 2003-12-10 | Aufbruch- und/oder Bohrhammer mit linear geführter Griffeinrichtung |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005056244A1 true WO2005056244A1 (de) | 2005-06-23 |
Family
ID=34672556
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2004/013338 WO2005056244A1 (de) | 2003-12-10 | 2004-11-24 | Aufbruch- und/oder bohrhammer mit linear geführter griffeinrichtung |
Country Status (7)
Country | Link |
---|---|
US (1) | US20080190632A1 (de) |
EP (1) | EP1691954B1 (de) |
JP (1) | JP4686473B2 (de) |
CN (1) | CN100471631C (de) |
DE (2) | DE10357758A1 (de) |
ES (1) | ES2311869T3 (de) |
WO (1) | WO2005056244A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2172311A1 (de) * | 2008-10-04 | 2010-04-07 | Protool GmbH | Hand-Werkzeugmaschine mit einer Handgriffanordnung |
Families Citing this family (11)
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 |
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 |
Citations (3)
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GB2171045A (en) * | 1985-02-15 | 1986-08-20 | Hilti Ag | Hand tool which generates vibrations eg a drill or chisel |
AU651269B2 (en) * | 1991-12-17 | 1994-07-14 | Ingersoll-Rand Company | Apparatus for reducing vibration transmission in hand-held tool |
US5522466A (en) * | 1994-10-28 | 1996-06-04 | Hitachi Koki Company Limited | Vibration-damping structure for electric hammer |
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US1845825A (en) * | 1927-07-22 | 1932-02-16 | Chicago Pneumatic Tool Co | Spring handle attachment for rock drills |
US3118509A (en) * | 1959-06-24 | 1964-01-21 | Salem Tool Co | Trench drill |
JPS4110642Y1 (de) * | 1964-02-12 | 1966-05-19 | ||
CS149009B1 (de) * | 1971-02-01 | 1973-05-24 | ||
US3793781A (en) * | 1972-03-10 | 1974-02-26 | A Hutchins | Reciprocating abrading or polishing tool |
US4050526A (en) * | 1975-05-07 | 1977-09-27 | Foresight Industries | Post driving machine |
JPS6052915B2 (ja) * | 1980-10-13 | 1985-11-21 | 誠 南舘 | 防振用ハンドル装置 |
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DE3447401A1 (de) * | 1984-12-24 | 1986-07-03 | Wacker-Werke Gmbh & Co Kg, 8077 Reichertshofen | Hammer mit schutzhaube |
US4653150A (en) * | 1986-05-27 | 1987-03-31 | Geo. A. Hormel & Co. | Carcass splitting apparatus |
US4813493A (en) * | 1987-04-14 | 1989-03-21 | Triten Corporation | Hydraulic top drive for wells |
PL153240B1 (en) * | 1988-03-29 | 1991-03-29 | Politechnika Poznanska | Vibration damping arrangement for hand tools |
DE3839207A1 (de) * | 1988-11-19 | 1990-05-23 | Hilti Ag | Tragbares handgeraet mit schlagwerk |
GB8907410D0 (en) * | 1989-04-01 | 1989-05-17 | Macdonald Pneumatics | Paving breakers and supports therefor |
SE468837B (sv) * | 1991-07-12 | 1993-03-29 | Anders Svensson | Haallare |
SE503979C2 (sv) * | 1995-07-13 | 1996-10-14 | Berema Atlas Copco Ab | Avvibrerat maskindrivet verktyg med bladfjäder upphängd vaggartad upphängningsanordning |
US6112831A (en) * | 1995-07-13 | 2000-09-05 | Atlas Copco Berema Aktiebolag | Handle frame for percussive hand held machines |
US5667021A (en) * | 1995-10-12 | 1997-09-16 | L. Castaneda Construction, Inc. | Apparatus for driving grade stakes |
US5833014A (en) * | 1996-03-18 | 1998-11-10 | Dunn; Herbert | Reciprocating tool handle |
DE29700003U1 (de) * | 1997-01-02 | 1997-02-27 | Wacker Werke Kg | Aufbruch- und/oder Bohrhammer |
KR100260309B1 (ko) * | 1997-06-11 | 2000-07-01 | 최해성 | 유압헤머 |
JP2000024959A (ja) * | 1998-07-08 | 2000-01-25 | Furukawa Co Ltd | ハンドブレーカのハンドル固定機構 |
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DE10136015A1 (de) * | 2001-07-24 | 2003-02-13 | Bosch Gmbh Robert | Handwerkzeugmaschine mit vibrationsgedämpftem Handgriff |
ATE361182T1 (de) * | 2001-10-15 | 2007-05-15 | Hilti Ag | Kühlluftleitung für ein elektrohandwerkzeuggerät mit elektropneumatischem schlagwerk |
DE10255162A1 (de) * | 2002-11-22 | 2004-06-03 | Hilti Ag | Vibrationsentkoppelte Schlagwerksbaugruppe |
DE102004019776A1 (de) * | 2004-04-23 | 2005-11-17 | Robert Bosch Gmbh | Handwerkzeugmaschine, insbesondere Bohr- und/oder Schlaghammer |
-
2003
- 2003-12-10 DE DE10357758A patent/DE10357758A1/de not_active Withdrawn
-
2004
- 2004-11-24 DE DE502004008175T patent/DE502004008175D1/de active Active
- 2004-11-24 ES ES04803257T patent/ES2311869T3/es active Active
- 2004-11-24 US US10/596,298 patent/US20080190632A1/en not_active Abandoned
- 2004-11-24 JP JP2006543415A patent/JP4686473B2/ja not_active Expired - Fee Related
- 2004-11-24 WO PCT/EP2004/013338 patent/WO2005056244A1/de active IP Right Grant
- 2004-11-24 EP EP04803257A patent/EP1691954B1/de not_active Expired - Fee Related
- 2004-11-24 CN CNB2004800270359A patent/CN100471631C/zh not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2171045A (en) * | 1985-02-15 | 1986-08-20 | Hilti Ag | Hand tool which generates vibrations eg a drill or chisel |
AU651269B2 (en) * | 1991-12-17 | 1994-07-14 | Ingersoll-Rand Company | Apparatus for reducing vibration transmission in hand-held tool |
US5522466A (en) * | 1994-10-28 | 1996-06-04 | Hitachi Koki Company Limited | Vibration-damping structure for electric hammer |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2172311A1 (de) * | 2008-10-04 | 2010-04-07 | Protool GmbH | Hand-Werkzeugmaschine mit einer Handgriffanordnung |
Also Published As
Publication number | Publication date |
---|---|
DE502004008175D1 (de) | 2008-11-13 |
US20080190632A1 (en) | 2008-08-14 |
JP4686473B2 (ja) | 2011-05-25 |
CN100471631C (zh) | 2009-03-25 |
CN1863648A (zh) | 2006-11-15 |
EP1691954B1 (de) | 2008-10-01 |
ES2311869T3 (es) | 2009-02-16 |
DE10357758A1 (de) | 2005-07-21 |
EP1691954A1 (de) | 2006-08-23 |
JP2007513784A (ja) | 2007-05-31 |
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