EP0949988A1 - Percussion drill and/or jack hammer with handle spring-buffered against the hammer housing - Google Patents
Percussion drill and/or jack hammer with handle spring-buffered against the hammer housingInfo
- Publication number
- EP0949988A1 EP0949988A1 EP97953905A EP97953905A EP0949988A1 EP 0949988 A1 EP0949988 A1 EP 0949988A1 EP 97953905 A EP97953905 A EP 97953905A EP 97953905 A EP97953905 A EP 97953905A EP 0949988 A1 EP0949988 A1 EP 0949988A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hammer
- handle
- guide rod
- housing
- sleeve
- 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
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
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/006—Vibration damping means
Definitions
- the invention relates to a breaker and / or hammer drill with a suspension against the Ha mergephaseuse handle.
- the previously known cushions for reducing the vibrations transmitted to the hand and arm are designed so that an angular offset between the device and the handle is prevented or the longitudinal suspension in the direction of action of the tool and the lateral suspension are designed approximately the same and quite hard, so that the damping of the Vibrations leaves something to be desired.
- a fixed suspension with an unchangeable spring characteristic and a relatively short spring travel have also proven to be disadvantageous because this means that no adaptation to different working conditions, such as in particular the type of material to be processed, is possible.
- the object of the invention is to design a breaker and / or hammer drill with a spring-loaded handle against the hammer housing in such a way that it offers the most effective protection of hand and arm against the tool vibrations with a simple and inexpensive construction, and on the one hand in all directions and preferably in Axial direction of the hammer provides effective damping, but at the same time also enables the tool to be guided securely, with a certain angular offset despite the linear guidance between the device and the handle should be possible.
- At least one straight guide extending parallel to the longitudinal axis of the hammer, which is displaceable to a limited extent along the handle relative to the hammer housing and against which it is cushioned to a limited extent on all sides, wherein according to a preferred embodiment the U-shaped handle with the Hammer housing facing, mutually parallel legs, with each straight leg is surrounded by a straight guide.
- each straight guide consists of a guide rod which extends essentially parallel to the longitudinal axis of the hammer housing and projects from it towards the handle, and a guide sleeve which is formed in the handle.
- the guide sleeve each consists of a fixed bushing in the handle and of a lining inserted into the bushing, axially held therein and made of rubber-elastic material, which is provided with a bore which extends at least over the length of the guide rod and has a matching cross section.
- the lining is also held in the axial direction on the guide rod.
- the guide rod can be axially cushioned in the bore, which is achieved according to a preferred embodiment by a on the free end face of the guide rod and compression spring supporting the bottom of the sleeve.
- a radial projection on the guide rod which engages in a radial recess in the lining, which has an axial length corresponding to the maximum permissible displacement distance between the hammer housing and the handle has, wherein the radial projection can be designed as an annular shoulder.
- Fig. 1 is a partially sectioned, schematic side view of a break and / or hammer drill and
- Fig. 2 shows a schematic detail section through a variant of the cushioning.
- a breaker and / or hammer drill designated overall by 10, consists essentially of two parts, namely the device carrying the tool and its drive, shown only schematically by its housing 12, and a U-shaped handle 14 for handling and guiding it two legs 16 and 18 running essentially parallel to one another and also approximately parallel to the direction of vibration of the tool carried by the housing 12.
- the housing 12 is provided with two guide rods 20 and 22 projecting from the housing 12 approximately in this direction of oscillation against the handle 14, each of which penetrates into one of the legs 16 and 18 and engages there in a guide sleeve 24 and 26, respectively.
- Each guide sleeve 24 and 26 has a sleeve 28 fixedly attached to the handle with a bottom 30 at its end facing away from the housing 12.
- the sleeve 28 there is at least one lining 32 made of rubber-elastic material, which is provided with a central bore 34, the cross section of which is adapted to the cross section of the guide rods 20 and 22.
- the liner 32 is held in the sleeve 28 in the axial direction.
- the length of the bore 34 is dimensioned such that it can accommodate the entire length of the guide rod 20 or 22 which is immersed in the guide sleeve 24 or 26.
- a cross-sectional widening 36 which forms an annular collar and engages in the cross section of the lining 32 and which can transmit axial forces to the lining 32 in both axial directions with an annular shoulder 38 or 40.
- the distance between the lining 32 and the bottom 30 can be bridged by an annular spacer 42.
- the handle 14 In the rest position shown in FIG. 1, the handle 14 is at a distance from the end of the housing 12 facing it in the direction of vibration of the tool or in the guide direction of the guide rods 20 and 22, and there is an approximately equal distance between the end engaging in the handle 14 each guide rod 20 or 22 and the bottom 30 of the sleeve 28, so that a swinging movement of the handle 14 relative to the housing 12 from this rest position in both guide directions, ie back and forth, is possible.
- the liner 32 enables the guide rods 20 and 22 to tilt relative to the axis of the bushes 28, the extent of which is dependent on the elasticity of the liner 32 and its radial expansion.
- a distance between the annular shoulders 38 and 40 and the opposite end faces 44 and 46 of two lining parts 32a and 32b is kept free on both sides of the cross-sectional widening 36, the guide rods 20 and 22 engaging in bores in both lining parts 32a and 32b and between the free end of these guide rods and the bottom 30 of the sleeve 28, a compression spring 50 is inserted as an axially acting spring element in the bore 34 of the lining part 32b.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
- Vibration Prevention Devices (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29700003U | 1997-01-02 | ||
DE29700003U DE29700003U1 (en) | 1997-01-02 | 1997-01-02 | Breaking and / or hammer drill |
PCT/EP1997/007237 WO1998029220A1 (en) | 1997-01-02 | 1997-12-22 | Percussion drill and/or jack hammer with handle spring-buffered against the hammer housing |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0949988A1 true EP0949988A1 (en) | 1999-10-20 |
EP0949988B1 EP0949988B1 (en) | 2001-11-07 |
Family
ID=8034157
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97953905A Expired - Lifetime EP0949988B1 (en) | 1997-01-02 | 1997-12-22 | Percussion drill and/or jack hammer with handle spring-buffered against the hammer housing |
Country Status (6)
Country | Link |
---|---|
US (1) | US6148930A (en) |
EP (1) | EP0949988B1 (en) |
JP (1) | JP4101301B2 (en) |
DE (2) | DE29700003U1 (en) |
ES (1) | ES2166107T3 (en) |
WO (1) | WO1998029220A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9993915B2 (en) | 2014-01-23 | 2018-06-12 | Black & Decker Inc. | Rear handle |
US10040184B2 (en) | 2014-01-23 | 2018-08-07 | Black & Decker Inc. | Rear handle |
US10046451B2 (en) | 2014-01-23 | 2018-08-14 | Black & Decker Inc. | Rear handle |
US10137562B2 (en) | 2014-01-23 | 2018-11-27 | Black & Decker Inc. | Rear handle |
Families Citing this family (63)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000047862A1 (en) * | 1999-02-10 | 2000-08-17 | Anglo Operations Limited | Rock drill handle |
DE10005080C1 (en) | 2000-02-04 | 2001-08-02 | Bosch Gmbh Robert | Hand tool has handle with handle part fixed to casing by elastic, vibration-damping element and fixing part fixed at elastic element |
DE10036078B4 (en) * | 2000-07-25 | 2007-04-05 | Robert Bosch Gmbh | Hand tool machine with a handle and an insulating device |
DE10130548B4 (en) * | 2001-06-25 | 2008-01-03 | Robert Bosch Gmbh | Additional handle |
DE10136015A1 (en) * | 2001-07-24 | 2003-02-13 | Bosch Gmbh Robert | Hand-held machine tool has vibration-dampened hand grip of two legs with levers hinged top hand grip legs and machine housing |
GB2402098B (en) * | 2003-05-21 | 2007-10-17 | Black & Decker Inc | Vibration reduction apparatus for power tool and power tool incorporating such apparatus |
GB2407789A (en) * | 2003-11-04 | 2005-05-11 | Black & Decker Inc | Vibration reduction apparatus for a power tool |
GB2407790A (en) * | 2003-11-04 | 2005-05-11 | Black & Decker Inc | Vibration reduction apparatus for a power tool |
GB2407791A (en) * | 2003-11-04 | 2005-05-11 | Black & Decker Inc | Vibration reduction apparatus for a power tool |
DE10357758A1 (en) * | 2003-12-10 | 2005-07-21 | Wacker Construction Equipment Ag | Break-away and / or rotary hammer with linearly guided grip device |
DE102004019776A1 (en) * | 2004-04-23 | 2005-11-17 | Robert Bosch Gmbh | Hand tool, in particular drill and / or percussion hammer |
GB2414702A (en) * | 2004-06-04 | 2005-12-07 | Black & Decker Inc | Vibration Reduction Apparatus for Power Tool |
DE102004041219A1 (en) * | 2004-08-26 | 2006-03-02 | Robert Bosch Gmbh | Hand machine tool grip device with a vibration shielding unit |
JP4647957B2 (en) | 2004-08-27 | 2011-03-09 | 株式会社マキタ | Work tools |
DE102004051465A1 (en) * | 2004-10-22 | 2006-04-27 | Robert Bosch Gmbh | Hand tool with vibration damped pistol handle |
JP4573637B2 (en) * | 2004-12-02 | 2010-11-04 | 株式会社マキタ | Reciprocating work tool |
DE102004061521A1 (en) * | 2004-12-21 | 2006-06-29 | Hilti Ag | Tool device with decoupled main handle |
JP4461046B2 (en) * | 2005-03-29 | 2010-05-12 | 株式会社マキタ | Reciprocating work tool |
DE102005016453A1 (en) * | 2005-04-11 | 2006-10-12 | Robert Bosch Gmbh | Hand tool |
DE102005038091A1 (en) * | 2005-08-11 | 2007-02-15 | Hilti Ag | Hand tool with vibration reduction |
EP1940594B1 (en) * | 2005-10-29 | 2009-07-08 | AEG Electric Tools GmbH | Portable power tool |
DE102005052428B4 (en) * | 2005-11-03 | 2015-06-18 | Robert Bosch Gmbh | Power tool |
DE102005000205A1 (en) * | 2005-12-23 | 2007-06-28 | Hilti Ag | Handle of a hand-held tool device |
GB2431610A (en) * | 2006-03-03 | 2007-05-02 | Black & Decker Inc | Handle Damping System |
EP1867443B1 (en) * | 2006-06-14 | 2009-07-15 | AEG Electric Tools GmbH | Auxiliary handle for a manually operated machine tool |
DE102006029630A1 (en) * | 2006-06-28 | 2008-01-03 | Robert Bosch Gmbh | Hand tool |
DE102006000374A1 (en) * | 2006-07-27 | 2008-01-31 | Hilti Ag | Hand tool with decoupling arrangement |
DE102006044433A1 (en) * | 2006-09-21 | 2008-04-03 | Robert Bosch Gmbh | Electric machine tool with vibration-decoupled grip element |
DE102006052807A1 (en) * | 2006-11-09 | 2008-05-15 | Robert Bosch Gmbh | Hand tool with a vibration-damped strap handle |
DE102007000093A1 (en) * | 2007-02-15 | 2008-08-21 | Hilti Ag | Hand tool |
DE102007012312A1 (en) * | 2007-03-14 | 2008-09-18 | Robert Bosch Gmbh | handle |
US8100745B2 (en) * | 2007-03-16 | 2012-01-24 | Black & Decker Inc. | Low vibration sander with a flexible top handle |
DE102007055735A1 (en) * | 2007-03-29 | 2008-10-02 | Robert Bosch Gmbh | handle |
GB2448058B (en) * | 2007-03-29 | 2010-06-23 | Bosch Gmbh Robert | Handle |
US20090000132A1 (en) * | 2007-06-29 | 2009-01-01 | The Stanley Works | Reduced vibration saw handle |
GB2451293A (en) * | 2007-07-27 | 2009-01-28 | Black & Decker Inc | Hammer drill with slidably mounted handle |
GB0801311D0 (en) * | 2008-01-24 | 2008-03-05 | Black & Decker Inc | Mounting assembly for handle for power tool |
GB2456807A (en) * | 2008-01-24 | 2009-07-29 | Black & Decker Inc | Mounting assembly for handle for power tool |
JP5180697B2 (en) * | 2008-06-19 | 2013-04-10 | 株式会社マキタ | Hand-held work tool |
JP5187059B2 (en) * | 2008-08-12 | 2013-04-24 | 日立工機株式会社 | Electric tool |
DE102009002463A1 (en) * | 2009-04-17 | 2010-10-21 | Hilti Aktiengesellschaft | Side handle |
DE102009002589A1 (en) * | 2009-04-23 | 2010-10-28 | Hilti Aktiengesellschaft | Hand tool |
JP5395531B2 (en) * | 2009-06-19 | 2014-01-22 | 株式会社マキタ | Work tools |
GB2472997A (en) | 2009-08-26 | 2011-03-02 | Black & Decker Inc | Hammer drill with vibration damping means in handle |
JP5502458B2 (en) | 2009-12-25 | 2014-05-28 | 株式会社マキタ | Impact tool |
JP5496812B2 (en) * | 2010-08-03 | 2014-05-21 | 株式会社マキタ | Work tools |
DE102010055673A1 (en) * | 2010-12-22 | 2012-06-28 | Andreas Stihl Ag & Co. Kg | Hand-held implement |
GB201112833D0 (en) | 2011-07-26 | 2011-09-07 | Black & Decker Inc | A hammer drill |
GB201112825D0 (en) * | 2011-07-26 | 2011-09-07 | Black & Decker Inc | A hammer drill |
DE102012103587A1 (en) * | 2012-04-24 | 2013-10-24 | C. & E. Fein Gmbh | Handleable machine tool with outer housing |
US20140262402A1 (en) * | 2013-03-14 | 2014-09-18 | Robert Bosch Gmbh | Power Hand Tool with Vibration Isolation |
TWI453098B (en) * | 2013-05-24 | 2014-09-21 | Rexon Ind Corp Ltd | An impact tool with vibration dampening device |
JP6070945B2 (en) * | 2013-05-28 | 2017-02-01 | 日立工機株式会社 | Portable work machine |
JP6096593B2 (en) * | 2013-05-29 | 2017-03-15 | 株式会社マキタ | Reciprocating work tool |
JP6502756B2 (en) * | 2014-11-28 | 2019-04-17 | 株式会社マキタ | Impact tool |
US10131049B1 (en) * | 2017-05-24 | 2018-11-20 | Steven M. Oas | Double wide shock-absorbing handle for tools |
CN107756339A (en) * | 2017-11-16 | 2018-03-06 | 陈君敏 | Electric hammer with shock-absorbing function |
WO2019195508A1 (en) * | 2018-04-04 | 2019-10-10 | Milwaukee Electric Tool Corporation | Rotary hammer |
CN108705121A (en) * | 2018-05-15 | 2018-10-26 | 钟利芬 | A kind of drilling device of hydraulic engineering |
US20220055198A1 (en) * | 2020-08-24 | 2022-02-24 | Makita Corporation | Power tool having hammer mechanism |
JP2022119301A (en) * | 2021-02-04 | 2022-08-17 | 株式会社マキタ | impact tool |
JP2022128006A (en) * | 2021-02-22 | 2022-09-01 | 株式会社マキタ | impact tool |
JP2024011112A (en) * | 2022-07-14 | 2024-01-25 | 株式会社マキタ | impact tool |
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GB565783A (en) * | 1943-02-22 | 1944-11-28 | Rubber Bonders Ltd | Improvements in and relating to fluid pressure operated tools |
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DE3410669A1 (en) * | 1984-03-23 | 1985-10-24 | Metabowerke GmbH & Co, 7440 Nürtingen | DAMPING ELEMENT AND ITS INSTALLATION IN A MOTOR-DRIVEN HAND TOOL |
DE3505181A1 (en) * | 1985-02-15 | 1986-08-21 | Hilti Ag, Schaan | VIBRATING HAND TOOL |
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DE3839207A1 (en) * | 1988-11-19 | 1990-05-23 | Hilti Ag | PORTABLE HAND DEVICE WITH STRIKE |
NO172677C (en) * | 1991-02-21 | 1993-08-25 | Teeness As | Device for damping vibrations, for example self-generated oscillations in drill rods and the like |
SE469549B (en) * | 1991-11-04 | 1993-07-26 | Atlas Copco Tools Ab | VIBRATION-INJURY BODY FOR A MANUFACTURED TOOL |
US5273120A (en) * | 1993-05-26 | 1993-12-28 | Ingersoll-Rand Company | Power tool with a vibration absorbing handle |
JPH08126975A (en) * | 1994-10-28 | 1996-05-21 | Hitachi Koki Co Ltd | Vibration control handle of electric hammer |
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-
1997
- 1997-01-02 DE DE29700003U patent/DE29700003U1/en not_active Expired - Lifetime
- 1997-12-22 US US09/331,941 patent/US6148930A/en not_active Expired - Lifetime
- 1997-12-22 DE DE59705308T patent/DE59705308D1/en not_active Expired - Lifetime
- 1997-12-22 EP EP97953905A patent/EP0949988B1/en not_active Expired - Lifetime
- 1997-12-22 ES ES97953905T patent/ES2166107T3/en not_active Expired - Lifetime
- 1997-12-22 WO PCT/EP1997/007237 patent/WO1998029220A1/en active IP Right Grant
- 1997-12-22 JP JP52959598A patent/JP4101301B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9829220A1 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9993915B2 (en) | 2014-01-23 | 2018-06-12 | Black & Decker Inc. | Rear handle |
US10040184B2 (en) | 2014-01-23 | 2018-08-07 | Black & Decker Inc. | Rear handle |
US10046451B2 (en) | 2014-01-23 | 2018-08-14 | Black & Decker Inc. | Rear handle |
US10137562B2 (en) | 2014-01-23 | 2018-11-27 | Black & Decker Inc. | Rear handle |
Also Published As
Publication number | Publication date |
---|---|
JP2001508364A (en) | 2001-06-26 |
DE59705308D1 (en) | 2001-12-13 |
US6148930A (en) | 2000-11-21 |
EP0949988B1 (en) | 2001-11-07 |
JP4101301B2 (en) | 2008-06-18 |
WO1998029220A1 (en) | 1998-07-09 |
ES2166107T3 (en) | 2002-04-01 |
DE29700003U1 (en) | 1997-02-27 |
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