EP1817139A1 - Manual machine tool handle device comprising a vibration-shielding unit - Google Patents
Manual machine tool handle device comprising a vibration-shielding unitInfo
- Publication number
- EP1817139A1 EP1817139A1 EP05743127A EP05743127A EP1817139A1 EP 1817139 A1 EP1817139 A1 EP 1817139A1 EP 05743127 A EP05743127 A EP 05743127A EP 05743127 A EP05743127 A EP 05743127A EP 1817139 A1 EP1817139 A1 EP 1817139A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hand tool
- handle device
- tool machine
- machine handle
- vibration
- 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
- 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
-
- 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
Definitions
- the invention is based on a handheld power tool grip device having a vibration shielding unit according to the generic term of claim 1 and of a handheld power tool according to the preamble of claim 12.
- Generic handheld power tool grip devices usually comprise a grip element mounted so as to be pivotable about a pivot axis or a grip element equipped with at least two degrees of freedom of movement.
- the invention relates to a Handmaschinengriff- device with a vibration shielding and a Guiding device for guiding a movement of a handle element movably mounted relative to a hand tool body.
- the movement is at least substantially rectilinear. It can thereby be achieved that impact impulses of a hand tool machine comprising the handheld power tool grip device are screened via a rectilinear movement, preferably in the direction of the impact impulse, independently of a direction in which an operator applies a support force to the operating element. Immediate transmission of the impact pulse or a component thereof via a joint or via a pivotable mounting can be avoided. Furthermore, tilting and a resulting tilting of the gripping element can be avoided, without having to sacrifice the necessary roughness in a construction site operation.
- the vibration shielding unit may on the one hand be designed as a resilient vibration shielding unit that reflects individual pulses of vibration back into the handheld power tool body and / or low pass filtered from the handheld power tool body onto the handheld machine body
- the vibration shield unit can be designed as a vibration damping or vibration absorption unit which is suitable for dissipating a registered vibration energy.
- Particularly advantageous embodiments of the invention are those in which the vibration shielding unit has a first portion of the vibration energy dissipated and reflected another portion of Vibrations ⁇ energy.
- the grip element is spaced from a housing of the hand tool body.
- blocking of the movement by dust particles and / or chips, which can become lodged between the grip element and the hand tool body, can be avoided.
- Dirt which can occur in particular in a construction site operation, can be easily removed.
- a conditional by the distance frame can be protected to avoid contamination by elastic and / or displaceably mounted in the direction of movement covering.
- the handheld power tool grip device has at least two crossover force transmission elements. As a result, transverse forces exerted on the handle element can be supported particularly effectively.
- a particularly secure guidance of the movement of the grip element can be achieved if the force transmission elements are pivotally connected to one another by a connecting element, in particular by the connecting element, which is arranged in a middle region of the force transmission elements, so that the force transmission elements can perform a scissor movement ,
- the connecting element can be particularly advantageously formed on at least one of the power transmission elements.
- a particularly comfortable vibration shield can be achieved if the handheld power tool grip device comprises at least one elastically deformable shock absorption element.
- cost saving potentials can be tapped if the return element and the Stoßabsorptionsele ⁇ ment are made in one piece.
- impact-absorbing elements it is possible, for example, to use various elastomers that appear appropriate to the person skilled in the art, for example also having a moss rubber structure.
- An impairment of the guiding properties of the machine tool grip device by the restoring element can be avoided if the restoring element acts on at least one force transmission element, particularly advantageously on at least two force transmission elements. It can thereby be achieved that a force of the restoring element is strengthened or weakened by means of a lever effect and can be advantageously adapted to customer requirements by selecting a point of application of the force.
- the handle element has a shock-absorbing and / or non-slip rubber coating on a side facing an operator, which advantageously can also have hand-sweat-absorbing properties.
- the grip element has a D-shape, a particularly advantageous handling of the handheld power tool can be achieved.
- an on / off switch of the craft machine can be protected against uncontrolled force effects, for example due to impacts.
- FIG. 1 shows a rotary hammer with a hand-held power tool, which comprises a vibration shield unit,
- FIG. 2 shows a handheld power tool grip device with a vibration shielding unit in an alternative embodiment of the invention
- FIG. 3 shows a handheld power tool grip device with a vibration shielding unit in a further alternative embodiment of the invention. Description of the embodiments
- FIG. 1 shows a hand-held power tool designed as a hammer drill with a hand tool body 14, a tool chuck 34 and a clamped tool 36.
- An impact mechanism (not shown) integrated in the hand tool body 14 is driven by a motor 38 of the hammer drill and generates axial impact pulses a working direction 40 on the tool 36.
- the hand tool body 14 On a side facing away from the tool 36, the hand tool body 14 has a D-shaped handle member 16 with a arranged on an inner side of the handle member 16 on / off switch 42.
- the grip element 16 is displaceably mounted on the power tool body 14 in the working direction 40.
- a movement 26 of the gripping element 16 is guided rectilinearly in the working direction 40 by a guide device 12, so that an operator can move the gripping element 16 counter to a spring force relative to the hand tool machine body 14 in the working direction 40.
- the spring force is from one
- Vibrationsabtubö 10 generates, in addition to the Systemss ⁇ device 12 designed as a spiral spring remindstell ⁇ element 30 includes ( Figure 2).
- FIG. 2 schematically shows a section through the handle element 16 and the vibration shielding unit 10.
- the handle element 16 is spaced from a housing of the hand tool machine body 14 by about 1 to 1.5 cm.
- a gap between the grip element 16 and the hand tool body 14 is displaceable by sliding in the direction of movement 26. Gererte, an edge of the power tool body 14 über ⁇ lapping cover covers.
- the guide device 12 consists essentially of two intersecting force transmission elements 20, 22 which are formed as stamped / bent parts and which are connected to each other in a scissor-like manner in a middle region by a connecting element 24 designed as a bolt.
- the first force transmission element 20 is displaceably mounted on the grip element 16 via a third bolt 48, which engages in a slot 54 aligned perpendicular to the movement 26 or the working direction 40, wherein one direction 28 the displacement of the direction of the slot 54 corresponds.
- the second power transmission element 22 via a fourth pin 50 which ein ⁇ engages in a direction perpendicular to the movement 26 and the working direction 40 elongated hole 56 engages in the direction 28 of the elongated hole 56 slidably mounted on the housing 18.
- the bolts 48, 50 move in their respective oblong holes 54, 56 perpendicular to the working direction 40 or to the movement 26 of the grip element 16 until the bolts 48, 50 move to an end left in FIG the elongated holes 54, 56 abut.
- the movement 26 in the working direction 40 is limited.
- the right ends of the elongated holes 54, 56 limit the movement 26 against the working direction 40.
- the force transmission elements 20, 22 pivot about the connecting element 24, wherein the compression spring of the vibration shielding unit 10 or the return element 30 arranged between the connecting element 24 and the grip element 16 is compressed or decompressed.
- the restoring element 30 generates the spring force of the vibration shielding unit 10.
- the restoring element 30 sets the grip element 16 counter to the working direction 40 into a starting position defined by the left ends of the elongated holes 54, 56 with the greatest possible distance between the grip element 16 and the housing 18.
- a shock pulse generated by the impact mechanism is at least partially reflected by a workpiece
- the impact pulse can travel via the tool 36 and the tool chuck 34 into the housing 18 of the hand tool body 14, which thereby accelerates counter to the working direction 40.
- an operator exerts a force on the grip element 16 that has at least one component in the working direction 40, it moves as a result of the reflected portion of the impact force. impulses the housing 18 against the force of the compression spring or the return element 30 in the direction of the handle member 16 which moves guided by the guide device 12 relative to the housing 18.
- a force transmitted to the grip element 16 via the restoring element 30 increases slowly in comparison with a time curve of the impact pulse and is supported by the operator so that the operator can intercept the impact pulse over a prolonged period of time.
- the guide device 12 with the restoring element 30 acts as a vibration shielding unit 10, which filters out high-frequency components of a vibration of the hand tool body 14.
- the restoring element 30 simultaneously serves as a shock-absorbing element 32, wherein embodiments of the invention are also conceivable in which a shock-absorbing element 32 separated from the restoring element 30 is present.
- FIGS. 3 and 4 show further exemplary embodiments of the invention. Analogous features are provided with the same reference numerals. In the description, differences to the exemplary embodiment illustrated in FIGS. 1 and 2 are essentially discussed. With regard to constant features, reference is made to the description of the exemplary embodiment illustrated in FIGS. 1 and 2.
- FIG. 3 shows an alternative vibration shielding unit 10, in which the restoring element 30 is designed as a tension spring, which acts in each case on a half of force transmission elements 20, 22 facing a grip element 16.
- the tension spring is in a starting position of the grip element 16 under a bias.
- FIG. 4 shows an exemplary embodiment of the invention which, besides the features of the exemplary embodiment shown in FIG. 3, has a shock absorption element 32 designed as a rubber component, which simultaneously forms a restoring element 30, and between a connecting element 24 formed as a bolt a housing 18 of a device comprising hammer drill is arranged.
- the return element 30 may be supported by a tension spring 52 shown in dashed lines in its effect.
- Embodiments of the invention are conceivable in which a plurality of, in particular identical, vibration shielding units 10 are arranged over a longitudinal extent of the grip element 16. Furthermore, embodiments of the invention are conceivable with alternative shock absorber units which appear meaningful to the person skilled in the art, for example with an inelastically deformable material or with hydraulic shock absorbers.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004041219A DE102004041219A1 (en) | 2004-08-26 | 2004-08-26 | Hand machine tool grip device with a vibration shielding unit |
PCT/EP2005/052020 WO2006021466A1 (en) | 2004-08-26 | 2005-05-03 | Manual machine tool handle device comprising a vibration-shielding unit |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1817139A1 true EP1817139A1 (en) | 2007-08-15 |
EP1817139B1 EP1817139B1 (en) | 2009-03-11 |
Family
ID=34967261
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05743127A Not-in-force EP1817139B1 (en) | 2004-08-26 | 2005-05-03 | Manual machine tool handle device comprising a vibration-shielding unit |
Country Status (5)
Country | Link |
---|---|
US (1) | US20080000664A1 (en) |
EP (1) | EP1817139B1 (en) |
CN (1) | CN101005928B (en) |
DE (2) | DE102004041219A1 (en) |
WO (1) | WO2006021466A1 (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2431610A (en) * | 2006-03-03 | 2007-05-02 | Black & Decker Inc | Handle Damping System |
CA2873135A1 (en) * | 2006-05-31 | 2007-11-30 | Ingersoll-Rand Company | Structural support for power tool housings |
DE102006051924A1 (en) * | 2006-11-03 | 2008-05-15 | Robert Bosch Gmbh | Hand tool with a vibration-damped, provided with a switch handle |
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 |
DE102007042721A1 (en) * | 2007-09-07 | 2009-03-12 | Robert Bosch Gmbh | Hand tool with a vibration-dampened by a compensating means handle |
DE102007054506A1 (en) * | 2007-11-15 | 2009-05-20 | Robert Bosch Gmbh | handle |
CN102245354A (en) | 2008-12-11 | 2011-11-16 | 富世华消费者户外产品北美公司 | Anti-vibration cantilevered handle for a blowing apparatus |
JP5361504B2 (en) * | 2009-04-10 | 2013-12-04 | 株式会社マキタ | Impact tool |
DE102009002589A1 (en) * | 2009-04-23 | 2010-10-28 | Hilti Aktiengesellschaft | Hand tool |
GB2482523A (en) * | 2010-08-05 | 2012-02-08 | Black & Decker Inc | Hammer drill comprising rear handle with mounting assembly allowing rotation and linear movement |
DE102010055673A1 (en) * | 2010-12-22 | 2012-06-28 | Andreas Stihl Ag & Co. Kg | Hand-held implement |
US8966773B2 (en) | 2012-07-06 | 2015-03-03 | Techtronic Power Tools Technology Limited | Power tool including an anti-vibration handle |
EP2848370A1 (en) * | 2013-09-12 | 2015-03-18 | HILTI Aktiengesellschaft | Manual tool machine |
US12021437B2 (en) | 2019-06-12 | 2024-06-25 | Milwaukee Electric Tool Corporation | Rotary power tool |
Family Cites Families (28)
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US707803A (en) * | 1901-12-12 | 1902-08-26 | John Ambrose Smith | Clamp. |
GB191215775A (en) * | 1912-07-05 | 1913-07-03 | Albert Charles James Guenee | Improvements in Percussive Tools. |
US1414354A (en) * | 1921-09-06 | 1922-05-02 | Starr M Gibbs | Hand vise |
US3050841A (en) * | 1959-11-02 | 1962-08-28 | Sylvania Electric Prod | Circuit board lifter tools |
US3322211A (en) * | 1964-05-06 | 1967-05-30 | Novosib Elektrotekhnichesky I | Elastic handle for vibrating-impact mechanisms |
US3824417A (en) * | 1973-03-19 | 1974-07-16 | Black & Decker Mfg Co | Handle mounting construction for electric paving breaker |
US3957304A (en) * | 1975-05-30 | 1976-05-18 | Sears Manufacturing Company | Restraint for a vehicle seat and seat belt |
US4060138A (en) * | 1976-07-08 | 1977-11-29 | Post Office | Vibratory tools |
JPS58124843A (en) * | 1982-01-20 | 1983-07-25 | Mitsubishi Steel Mfg Co Ltd | Vibration-insulating device |
DE3376740D1 (en) * | 1983-02-03 | 1988-06-30 | Maco Meudon Sa | Percussive tool with swinging handles |
DE3312195A1 (en) * | 1983-04-02 | 1984-10-11 | Wacker-Werke Gmbh & Co Kg, 8077 Reichertshofen | HANDMADE HAMMER AND DRILL |
DE3447401A1 (en) * | 1984-12-24 | 1986-07-03 | Wacker-Werke Gmbh & Co Kg, 8077 Reichertshofen | HAMMER WITH COVER |
DE3505181A1 (en) * | 1985-02-15 | 1986-08-21 | Hilti Ag, Schaan | VIBRATING HAND TOOL |
DE3521808A1 (en) * | 1985-06-19 | 1987-01-02 | Hilti Ag | VIBRATING HAND TOOL |
DE4213206A1 (en) * | 1991-07-19 | 1993-01-21 | Grammer Ag | CUSHIONED SEAT FRAME FOR ONE SEAT |
JPH0780780A (en) * | 1993-09-14 | 1995-03-28 | Opt Eng Kk | Shock absorber in robot for tool generating impact |
JPH08126975A (en) * | 1994-10-28 | 1996-05-21 | Hitachi Koki Co Ltd | Vibration control handle of electric hammer |
JP2638750B2 (en) * | 1994-10-13 | 1997-08-06 | リョービ株式会社 | Power tool handle structure |
US5697456A (en) * | 1995-04-10 | 1997-12-16 | Milwaukee Electric Tool Corp. | Power tool with vibration isolated handle |
US5829948A (en) * | 1995-10-26 | 1998-11-03 | Susanne Becklund, Adminstratix | Multipurpose lift apparatus and method |
DE29700003U1 (en) * | 1997-01-02 | 1997-02-27 | Wacker-Werke Gmbh & Co Kg, 85084 Reichertshofen | Breaking and / or hammer drill |
USH1811H (en) * | 1997-12-16 | 1999-11-02 | Rescigno; Gerald R. | Apparatus and method for reducing low frequency vibrations in power tools |
DE10138123A1 (en) * | 2001-08-03 | 2003-02-27 | Bosch Gmbh Robert | Power tool handle, e.g. for a hammer drill, has a parallel lever linkage for mounting at the tool housing together with a damper spring to dampen vibrations at the handle when using the tool |
JP4157382B2 (en) * | 2001-04-11 | 2008-10-01 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Hand-held machine tool with vibration-damping handgrip |
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 |
US6966873B2 (en) * | 2001-12-26 | 2005-11-22 | Blanking Systems, Inc. | Flush mounted presser assembly |
DE10254813A1 (en) * | 2002-11-23 | 2004-06-03 | Hilti Ag | Electric hand machine tool with vibration-decoupled hammer mechanism assembly |
EP1882560B1 (en) * | 2003-09-10 | 2011-06-08 | Makita Corporation | Vibration isolating handle |
-
2004
- 2004-08-26 DE DE102004041219A patent/DE102004041219A1/en not_active Withdrawn
-
2005
- 2005-05-03 DE DE502005006843T patent/DE502005006843D1/en active Active
- 2005-05-03 WO PCT/EP2005/052020 patent/WO2006021466A1/en active Application Filing
- 2005-05-03 EP EP05743127A patent/EP1817139B1/en not_active Not-in-force
- 2005-05-03 CN CN200580028571.5A patent/CN101005928B/en not_active Expired - Fee Related
- 2005-05-03 US US10/564,145 patent/US20080000664A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2006021466A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE502005006843D1 (en) | 2009-04-23 |
US20080000664A1 (en) | 2008-01-03 |
CN101005928B (en) | 2013-02-13 |
EP1817139B1 (en) | 2009-03-11 |
WO2006021466A1 (en) | 2006-03-02 |
DE102004041219A1 (en) | 2006-03-02 |
CN101005928A (en) | 2007-07-25 |
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